565775 has 24 divisors (see below), whose sum is σ = 830304. Its totient is φ = 374400.

The previous prime is 565771. The next prime is 565787. The reversal of 565775 is 577565.

It is not a de Polignac number, because 565775 - 2² = 565771 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (35).

It is a Duffinian number.

It is a plaindrome in base 12.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (565771) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 9245 + ... + 9305.

It is an arithmetic number, because the mean of its divisors is an integer number (34596).

2⁵⁶⁵⁷⁷⁵ is an apocalyptic number.

565775 is a deficient number, since it is larger than the sum of its proper divisors (264529).

565775 is a wasteful number, since it uses less digits than its factorization.

565775 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 131 (or 126 counting only the distinct ones).

The product of its digits is 36750, while the sum is 35.

The square root of 565775 is about 752.1801645882. The cubic root of 565775 is about 82.7080759269.

The spelling of 565775 in words is "five hundred sixty-five thousand, seven hundred seventy-five".