565555564 has 24 divisors (see below), whose sum is σ = 1170116640. Its totient is φ = 234022656.

The previous prime is 565555561. The next prime is 565555597. The reversal of 565555564 is 465555565.

565555564 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (565555561) 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, 347437 + ... + 349060.

It is an arithmetic number, because the mean of its divisors is an integer number (48754860).

Almost surely, 2^565555564 is an apocalyptic number.

It is an amenable number.

565555564 is an abundant number, since it is smaller than the sum of its proper divisors (604561076).

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

565555564 is a wasteful number, since it uses less digits than its factorization.

565555564 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 696537 (or 696535 counting only the distinct ones).

The product of its digits is 2250000, while the sum is 46.

The square root of 565555564 is about 23781.4121531922. The cubic root of 565555564 is about 826.9738176035.

Subtracting from 565555564 its reverse (465555565), we obtain a palindrome (99999999).

The spelling of 565555564 in words is "five hundred sixty-five million, five hundred fifty-five thousand, five hundred sixty-four".