565859 has 8 divisors (see below), whose sum is σ = 651360. Its totient is φ = 481536.

The previous prime is 565849. The next prime is 565867. The reversal of 565859 is 958565.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 565859 - 2⁸ = 565603 is a prime.

It is a Duffinian number.

It is a plaindrome in base 12.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 565859.

It is not an unprimeable number, because it can be changed into a prime (565849) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1427 + ... + 1779.

It is an arithmetic number, because the mean of its divisors is an integer number (81420).

2⁵⁶⁵⁸⁵⁹ is an apocalyptic number.

565859 is a deficient number, since it is larger than the sum of its proper divisors (85501).

565859 is a wasteful number, since it uses less digits than its factorization.

565859 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 589.

The product of its digits is 54000, while the sum is 38.

The square root of 565859 is about 752.2360002021. The cubic root of 565859 is about 82.7121689171.

The spelling of 565859 in words is "five hundred sixty-five thousand, eight hundred fifty-nine".