565

565 = 5 x 113.

565 has two representations as a sum of two squares: 565 = 6² + 23² = 9² + 22².

565 is the hypotenuse of two primitive Pythagorean triples: 565² = 276² + 493² = 396² + 403².

565 is 474 in base 11.

565 is the sum of three consecutive primes: 565 = 181 + 191 + 193.

in the year 565, St. Columba reported seeing a monster in Loch Ness, Scotland.

Source: WolframAlpha