6647214172 has 12 divisors (see below), whose sum is σ = 11633461056. Its totient is φ = 3323368160.

The previous prime is 6647214139. The next prime is 6647214181. The reversal of 6647214172 is 2714127466.

It is a congruent number.

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, 12597 + ... + 115987.

It is an arithmetic number, because the mean of its divisors is an integer number (969455088).

Almost surely, 2^6647214172 is an apocalyptic number.

It is an amenable number.

6647214172 is a deficient number, since it is larger than the sum of its proper divisors (4986246884).

6647214172 is a wasteful number, since it uses less digits than its factorization.

6647214172 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 119468 (or 119466 counting only the distinct ones).

The product of its digits is 112896, while the sum is 40.

The square root of 6647214172 is about 81530.4493548269. The cubic root of 6647214172 is about 1880.2397245989.

The spelling of 6647214172 in words is "six billion, six hundred forty-seven million, two hundred fourteen thousand, one hundred seventy-two".