8646566664 has 64 divisors (see below), whose sum is σ = 22768128000. Its totient is φ = 2728814400.

The previous prime is 8646566633. The next prime is 8646566699. The reversal of 8646566664 is 4666656468.

It is a hoax number, since the sum of its digits (57) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (57).

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, 884797 + ... + 894515.

It is an arithmetic number, because the mean of its divisors is an integer number (355752000).

Almost surely, 2^8646566664 is an apocalyptic number.

It is an amenable number.

8646566664 is an abundant number, since it is smaller than the sum of its proper divisors (14121561336).

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

8646566664 is a wasteful number, since it uses less digits than its factorization.

8646566664 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11698 (or 11694 counting only the distinct ones).

The product of its digits is 29859840, while the sum is 57.

The square root of 8646566664 is about 92986.9166280934. The cubic root of 8646566664 is about 2052.4908579536.

The spelling of 8646566664 in words is "eight billion, six hundred forty-six million, five hundred sixty-six thousand, six hundred sixty-four".