It's about one-one-hundred-fiftieth as heavy as a Kangaroo.
It's about 150 times as heavy as a Die (Dice).
In other words, the weight of a Die (Dice) is 0.0067 times 623.689508750 grams.(for six-sided, 16 mm, rounded cube)
A die, of the size most commonly used in board games and casinos, typically weight 4.1 g. The use of dice and dice-like tools predates written history, with the oldest known examples belonging to a 5,000-year old backgammon set uncovered during an archaeological dig in modern-day Iran.
It's about one-two-hundred-fiftieth as heavy as a Panda Bear.
In other words, the weight of a Panda Bear is 240 times 623.689508750 grams.(a.k.a. Giant Panda, Ailuropoda melanoleuca)(Adult, male)
An adult, male Giant Panda weighs up to 150,000 grams. Despite having the digestive system of a carnivore, the panda eats only bamboo and must eat up to 6,400 grams of it per day to compensate for the limited energy the plant provides.
It's about 250 times as heavy as a Penny.
In other words, the weight of a Penny is 0.004 times 623.689508750 grams.(United States) (formally one-cent coin) (Union shield design, 2010-present)
The weight of a United States penny is 2.5 g. According to a 2010 report by the United States Mint, the cost of manufacturing and distributing a penny is $0.0179 — more than its face-value.
It's about one-two-hundred-fiftieth as heavy as a Reindeer.
In other words, 623.689508750 grams is 0.00377 times the weight of a Reindeer, and the weight of a Reindeer is 265 times that amount.(for Rangifer tarandus granti, adult, bull) (a.k.a. Caribou) ()Rangifer tarandus)
An adult, male reindeer weighs between 166,000 grams. Reindeer undertake a lengthy annual migration, with some herds traveling up to 5,000 km.
To all those observing, Merry Christmas from the Measure of Things.
It's about one-three-hundredth as heavy as The Heart of a Blue Whale.
In other words, 623.689508750 grams is 0.0031 times the weight of The Heart of a Blue Whale, and the weight of The Heart of a Blue Whale is 320 times that amount.(Balaenoptera musculus) (adult)
(for a 2014 specimen)
The heart of a blue whale weighs about 200,000 grams. These hearts pump an estimated 7,100 L (1,875 gal) of blood through the whale's massive body.
It's about 350 times as heavy as a Playing Card.
In other words, the weight of a Playing Card is 0.0029 times 623.689508750 grams.(ISO 216 B8 size, 2.5" x 3.5")
A single ISO 216 B8-size playing card weighs 1.8 g. Although this size is the most common home playing card, many casinos use "bridge size" cards — 2,640 sq. mm (4.036 sq. in) smaller in area.