565769 has 2 divisors, whose sum is σ = 565770. Its totient is φ = 565768.

The previous prime is 565727. The next prime is 565771. The reversal of 565769 is 967565.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 405769 + 160000 = 637^2 + 400^2 .

It is a cyclic number.

It is not a de Polignac number, because 565769 - 2¹⁶ = 500233 is a prime.

It is a super-2 number, since 2×565769² = 640189122722, which contains 22 as substring.

Together with 565771, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (565069) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 282884 + 282885.

It is an arithmetic number, because the mean of its divisors is an integer number (282885).

2⁵⁶⁵⁷⁶⁹ is an apocalyptic number.

It is an amenable number.

565769 is a deficient number, since it is larger than the sum of its proper divisors (1).

565769 is an equidigital number, since it uses as much as digits as its factorization.

565769 is an evil number, because the sum of its binary digits is even.

The product of its digits is 56700, while the sum is 38.

The square root of 565769 is about 752.1761761715. The cubic root of 565769 is about 82.7077835550.

The spelling of 565769 in words is "five hundred sixty-five thousand, seven hundred sixty-nine".