565642 has 16 divisors (see below), whose sum is σ = 1058112. Its totient is φ = 220320.

The previous prime is 565637. The next prime is 565651. The reversal of 565642 is 246565.

It is a d-powerful number, because it can be written as 5² + 6⁷ + 6⁷ + 5⁴ + 4⁵ + 2¹² .

It is a self number, because there is not a number n which added to its sum of digits gives 565642.

It is an unprimeable 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 7 ways as a sum of consecutive naturals, for example, 1683 + ... + 1990.

It is an arithmetic number, because the mean of its divisors is an integer number (66132).

2⁵⁶⁵⁶⁴² is an apocalyptic number.

565642 is a deficient number, since it is larger than the sum of its proper divisors (492470).

565642 is a wasteful number, since it uses less digits than its factorization.

565642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3693.

The product of its digits is 7200, while the sum is 28.

The square root of 565642 is about 752.0917497221. The cubic root of 565642 is about 82.7015945305.

The spelling of 565642 in words is "five hundred sixty-five thousand, six hundred forty-two".