565745 has 4 divisors (see below), whose sum is σ = 678900. Its totient is φ = 452592.

The previous prime is 565727. The next prime is 565769. The reversal of 565745 is 547565.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 262144 + 303601 = 512^2 + 551^2 .

It is a cyclic number.

It is not a de Polignac number, because 565745 - 2⁸ = 565489 is a prime.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 56570 + ... + 56579.

It is an arithmetic number, because the mean of its divisors is an integer number (169725).

2⁵⁶⁵⁷⁴⁵ is an apocalyptic number.

It is an amenable number.

565745 is a deficient number, since it is larger than the sum of its proper divisors (113155).

565745 is a wasteful number, since it uses less digits than its factorization.

565745 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 113154.

The product of its digits is 21000, while the sum is 32.

The square root of 565745 is about 752.1602222931. The cubic root of 565745 is about 82.7066140465.

The spelling of 565745 in words is "five hundred sixty-five thousand, seven hundred forty-five".