8657872 has 20 divisors (see below), whose sum is σ = 16873920. Its totient is φ = 4303328.

The previous prime is 8657851. The next prime is 8657881. The reversal of 8657872 is 2787568.

It is a happy number.

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, 1353 + ... + 4375.

It is an arithmetic number, because the mean of its divisors is an integer number (843696).

Almost surely, 2^8657872 is an apocalyptic number.

It is an amenable number.

8657872 is a deficient number, since it is larger than the sum of its proper divisors (8216048).

8657872 is a wasteful number, since it uses less digits than its factorization.

8657872 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3210 (or 3204 counting only the distinct ones).

The product of its digits is 188160, while the sum is 43.

The square root of 8657872 is about 2942.4262097799. The cubic root of 8657872 is about 205.3385008351.

The spelling of 8657872 in words is "eight million, six hundred fifty-seven thousand, eight hundred seventy-two".