6690972 has 24 divisors (see below), whose sum is σ = 15976576. Its totient is φ = 2178288.

The previous prime is 6690949. The next prime is 6690973. The reversal of 6690972 is 2790966.

It is a Smith number, since the sum of its digits (39) coincides with the sum of the digits of its prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 6690972.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6690973) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5968 + ... + 6999.

Almost surely, 2^6690972 is an apocalyptic number.

It is an amenable number.

6690972 is an abundant number, since it is smaller than the sum of its proper divisors (9285604).

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

6690972 is a wasteful number, since it uses less digits than its factorization.

6690972 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13017 (or 13015 counting only the distinct ones).

The product of its (nonzero) digits is 40824, while the sum is 39.

The square root of 6690972 is about 2586.6913229065. The cubic root of 6690972 is about 188.4356503233.

The spelling of 6690972 in words is "six million, six hundred ninety thousand, nine hundred seventy-two".