16,807


16807 is the natural number following 16806 and preceding 16808.

In mathematics

As a number of the form, it can be applied in Cayley's formula to count the number of trees with seven labeled nodes.
The powers of seven, including this one, feature in problem 79 from the Rhind Mathematical Papyrus, from ancient Egypt circa 1650 BC. It resembles the modern English riddle As I was going to St Ives, which compounds powers of seven up to kittens, but reaching one more step, hekat. Another puzzle of the same type, with 16807 knives, occurs in Fibonacci's Liber Abaci.

In other fields