6626662564 has 12 divisors (see below), whose sum is σ = 11736378864. Its totient is φ = 3273411464.

The previous prime is 6626662541. The next prime is 6626662571. The reversal of 6626662564 is 4652666266.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9979582 + ... + 9980245.

It is an arithmetic number, because the mean of its divisors is an integer number (978031572).

Almost surely, 2^6626662564 is an apocalyptic number.

It is an amenable number.

6626662564 is a deficient number, since it is larger than the sum of its proper divisors (5109716300).

6626662564 is a wasteful number, since it uses less digits than its factorization.

6626662564 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19959914 (or 19959912 counting only the distinct ones).

The product of its digits is 3732480, while the sum is 49.

The square root of 6626662564 is about 81404.3153892962. The cubic root of 6626662564 is about 1878.2999725353.

The spelling of 6626662564 in words is "six billion, six hundred twenty-six million, six hundred sixty-two thousand, five hundred sixty-four".