565704 has 56 divisors (see below), whose sum is σ = 1606710. Its totient is φ = 186624.

The previous prime is 565667. The next prime is 565723. The reversal of 565704 is 407565.

565704 is a `hidden beast` number, since 5 + 657 + 0 + 4 = 666.

It can be written as a sum of positive squares in only one way, i.e., 492804 + 72900 = 702^2 + 270^2 .

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is an unprimeable number.

565704 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 13 ways as a sum of consecutive naturals, for example, 5784 + ... + 5880.

2⁵⁶⁵⁷⁰⁴ is an apocalyptic number.

565704 is a gapful number since it is divisible by the number (54) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 565704, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (803355).

565704 is an abundant number, since it is smaller than the sum of its proper divisors (1041006).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

565704 is an equidigital number, since it uses as much as digits as its factorization.

565704 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 121 (or 102 counting only the distinct ones).

The product of its (nonzero) digits is 4200, while the sum is 27.

The square root of 565704 is about 752.1329669679. The cubic root of 565704 is about 82.7046160597.

The spelling of 565704 in words is "five hundred sixty-five thousand, seven hundred four".