565666764 has 48 divisors (see below), whose sum is σ = 1423242240. Its totient is φ = 173828160.

The previous prime is 565666757. The next prime is 565666771. The reversal of 565666764 is 467666565.

It is an interprime number because it is at equal distance from previous prime (565666757) and next prime (565666771).

It is a hoax number, since the sum of its digits (51) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 152767 + ... + 156425.

It is an arithmetic number, because the mean of its divisors is an integer number (29650880).

Almost surely, 2^565666764 is an apocalyptic number.

It is an amenable number.

565666764 is an abundant number, since it is smaller than the sum of its proper divisors (857575476).

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

565666764 is a wasteful number, since it uses less digits than its factorization.

565666764 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4670 (or 4668 counting only the distinct ones).

The product of its digits is 5443200, while the sum is 51.

The square root of 565666764 is about 23783.7499986861. The cubic root of 565666764 is about 827.0280141423.

The spelling of 565666764 in words is "five hundred sixty-five million, six hundred sixty-six thousand, seven hundred sixty-four".