6647004872 has 64 divisors (see below), whose sum is σ = 13059532800. Its totient is φ = 3168000000.

The previous prime is 6647004869. The next prime is 6647004883. The reversal of 6647004872 is 2784007466.

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, 8850497 + ... + 8851247.

It is an arithmetic number, because the mean of its divisors is an integer number (204055200).

Almost surely, 2^6647004872 is an apocalyptic number.

6647004872 is a gapful number since it is divisible by the number (62) formed by its first and last digit.

It is an amenable number.

6647004872 is a deficient number, since it is larger than the sum of its proper divisors (6412527928).

6647004872 is a wasteful number, since it uses less digits than its factorization.

6647004872 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1278 (or 1274 counting only the distinct ones).

The product of its (nonzero) digits is 451584, while the sum is 44.

The square root of 6647004872 is about 81529.1657751997. The cubic root of 6647004872 is about 1880.2199901009.

The spelling of 6647004872 in words is "six billion, six hundred forty-seven million, four thousand, eight hundred seventy-two".