6688972 has 6 divisors (see below), whose sum is σ = 11705708. Its totient is φ = 3344484.

The previous prime is 6688967. The next prime is 6688999. The reversal of 6688972 is 2798866.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 836118 + ... + 836125.

Almost surely, 2^6688972 is an apocalyptic number.

It is an amenable number.

6688972 is a deficient number, since it is larger than the sum of its proper divisors (5016736).

6688972 is a wasteful number, since it uses less digits than its factorization.

6688972 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1672247 (or 1672245 counting only the distinct ones).

The product of its digits is 290304, while the sum is 46.

The square root of 6688972 is about 2586.3046997599. The cubic root of 6688972 is about 188.4168733376.

The spelling of 6688972 in words is "six million, six hundred eighty-eight thousand, nine hundred seventy-two".