6689672 has 32 divisors (see below), whose sum is σ = 14407200. Its totient is φ = 2880000.

The previous prime is 6689659. The next prime is 6689681. The reversal of 6689672 is 2769866.

It is a super-2 number, since 2×6689672² = 89503422935168, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (44).

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, 329 + ... + 3672.

It is an arithmetic number, because the mean of its divisors is an integer number (450225).

Almost surely, 2^6689672 is an apocalyptic number.

It is an amenable number.

6689672 is an abundant number, since it is smaller than the sum of its proper divisors (7717528).

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

6689672 is a wasteful number, since it uses less digits than its factorization.

6689672 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4037 (or 4033 counting only the distinct ones).

The product of its digits is 217728, while the sum is 44.

The square root of 6689672 is about 2586.4400244351. The cubic root of 6689672 is about 188.4234457083.

The spelling of 6689672 in words is "six million, six hundred eighty-nine thousand, six hundred seventy-two".