6626662664 has 16 divisors (see below), whose sum is σ = 12965209920. Its totient is φ = 3169273360.

The previous prime is 6626662657. The next prime is 6626662697. The reversal of 6626662664 is 4662666266.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 18007052 + ... + 18007419.

It is an arithmetic number, because the mean of its divisors is an integer number (810325620).

Almost surely, 2^6626662664 is an apocalyptic number.

It is an amenable number.

6626662664 is a deficient number, since it is larger than the sum of its proper divisors (6338547256).

6626662664 is a wasteful number, since it uses less digits than its factorization.

6626662664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36014500 (or 36014496 counting only the distinct ones).

The product of its digits is 4478976, while the sum is 50.

The square root of 6626662664 is about 81404.3160035142. The cubic root of 6626662664 is about 1878.2999819835.

The spelling of 6626662664 in words is "six billion, six hundred twenty-six million, six hundred sixty-two thousand, six hundred sixty-four".