It's about one-fortieth as heavy as The Statue of Liberty
In other words, 635,000 kilograms is 0.0258 times the weight of The Statue of Liberty, and the weight of The Statue of Liberty is 38.80 times that amount.(a.k.a. Liberty Enlightening the World, a.k.a. La Liberté éclairant le monde) (total weight, including foundation)
The total weight of the Statue of Liberty, including her base is roughly 24,600,000 kilograms. The statue was designed using an optical trick known as "forced perspective" to make the statue appear proportionally correct when viewed from its base and is, in actuality, disproportionately large at the top.
It's about 55 times as heavy as an Anchor of a Cruise Ship
In other words, 635,000 kilograms is 56.20 times the weight of an Anchor of a Cruise Ship, and the weight of an Anchor of a Cruise Ship is 0.0178 times that amount.(for QE2 forward anchor, a.k.a. RMS Queen Elizabeth 2)
Each of the forward anchors of the RMS Queen Elizabeth 2 weighs 11,300 kg. The anchor of the QE2 now sits in front of the Holyrood Church in Southampton, England, United Kingdom, along a pedestrian tourist route known as "the QE2 mile."
It's about 100 times as heavy as a Tyrannosaurus rex
In other words, 635,000 kilograms is 99 times the weight of a Tyrannosaurus rex, and the weight of a Tyrannosaurus rex is 0.01 times that amount.(for FMNH PR2081, a.k.a. "Sue") (a.k.a. Tyrannosaurus, a.k.a. T-Rex) (estimated live weight)
The notable Tyrannosaurus specimen housed at the Field Museum of Natural History in Chicago, Illinois, "Sue," is estimated to have weighed about 6,400 kilograms while alive. A renowned predator in popular culture, the teeth of tyrannosaurus rex were up to 33.02 cm (13 in) long.
It's about 100 times as heavy as an Elephant
In other words, the weight of an Elephant is 0.01 times 635,000 kilograms.(for African bush elephant, Loxodonta africana) (Adult, bull)
A bull African bush elephant weighs about 6,100 kg. Among African elephants, both males and females have tusks (whereas female Asian elephants, Elephas maximus, do not have tusks) which can grow to 3 m (10 ft) and typically weigh about 4,000 kg
It's about 150 times as heavy as a Hippopotamus
In other words, 635,000 kilograms is 169 times the weight of a Hippopotamus, and the weight of a Hippopotamus is 0.00592 times that amount.(Hippopotamus amphibius) (adult, male)
The average weight of an adult male hippopotamus ranges from 3,000 to 4,500 kg. Appearances to the contrary, adult hippos cannot swim or float in water; they actually move by leaping and walking across lake bottoms at about 8 kph (5 mph).
It's about one-two-hundredth as heavy as The CN Tower
In other words, 635,000 kilograms is 0.0053855 times the weight of The CN Tower, and the weight of The CN Tower is 185.680 times that amount.(a.k.a. La Tour CN, a.k.a. Canadian National Tower, a.k.a. Canada's National Tower) (Toronto, Canada)
The CN Tower weighs approximately 117,910,000 kilograms. The Tower is home to the world's highest glass floor — a viewing area that allows visitors to look straight down 342 m (1,120 ft) to the ground below.
It's about 250 times as heavy as The Tongue of a Blue Whale
In other words, the weight of The Tongue of a Blue Whale is 0.0042 times 635,000 kilograms.(Balaenoptera musculus) (adult)
The tongue of a Blue Whale can weigh up to 2,700 kilograms. Despite their tremendous size, blue whales feed almost exclusively on tiny crustaceans called krill and cannot swallow anything much larger than a beach ball.