6626639264 has 48 divisors (see below), whose sum is σ = 15214248000. Its totient is φ = 2839983552.

The previous prime is 6626639231. The next prime is 6626639281. The reversal of 6626639264 is 4629366266.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 290894 + ... + 312845.

It is an arithmetic number, because the mean of its divisors is an integer number (316963500).

Almost surely, 2^6626639264 is an apocalyptic number.

It is an amenable number.

6626639264 is an abundant number, since it is smaller than the sum of its proper divisors (8587608736).

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

6626639264 is an equidigital number, since it uses as much as digits as its factorization.

6626639264 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 603770 (or 603748 counting only the distinct ones).

The product of its digits is 3359232, while the sum is 50.

The square root of 6626639264 is about 81404.1722763643. The cubic root of 6626639264 is about 1878.2977711033.

The spelling of 6626639264 in words is "six billion, six hundred twenty-six million, six hundred thirty-nine thousand, two hundred sixty-four".