6660872 has 48 divisors (see below), whose sum is σ = 13778160. Its totient is φ = 3015936.

The previous prime is 6660859. The next prime is 6660911. The reversal of 6660872 is 2780666.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 99383 + ... + 99449.

It is an arithmetic number, because the mean of its divisors is an integer number (287045).

Almost surely, 2^6660872 is an apocalyptic number.

It is an amenable number.

6660872 is an abundant number, since it is smaller than the sum of its proper divisors (7117288).

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

6660872 is a wasteful number, since it uses less digits than its factorization.

6660872 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 150 (or 129 counting only the distinct ones).

The product of its (nonzero) digits is 24192, while the sum is 35.

The square root of 6660872 is about 2580.8665211514. The cubic root of 6660872 is about 188.1526600684.

The spelling of 6660872 in words is "six million, six hundred sixty thousand, eight hundred seventy-two".