564
564 is a natural number that comes after 563 and before 565. It is an even, composite number.
Prime factorization: 564 = 2^2 × 3 × 47.
Positive divisors: 1, 2, 3, 4, 6, 12, 47, 94, 141, 188, 282, 564.
Sum of divisors is 1344; sum of proper divisors is 780, so 564 is an abundant number
Representations: binary 1000110100, hex 0x234, octal 1064.
In science and color science, 564 nanometers lies in the yellow-green region of the visible spectrum.
In history, 564 CE is a year in the 6th century.
---