8656985 has 4 divisors (see below), whose sum is σ = 10388388. Its totient is φ = 6925584.

The previous prime is 8656979. The next prime is 8657009. The reversal of 8656985 is 5896568.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 4343056 + 4313929 = 2084^2 + 2077^2 .

It is a cyclic number.

It is not a de Polignac number, because 8656985 - 2⁸ = 8656729 is a prime.

It is an Ulam number.

It is a Duffinian 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, 865694 + ... + 865703.

It is an arithmetic number, because the mean of its divisors is an integer number (2597097).

Almost surely, 2^8656985 is an apocalyptic number.

It is an amenable number.

8656985 is a deficient number, since it is larger than the sum of its proper divisors (1731403).

8656985 is a wasteful number, since it uses less digits than its factorization.

8656985 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1731402.

The product of its digits is 518400, while the sum is 47.

The square root of 8656985 is about 2942.2754799644. The cubic root of 8656985 is about 205.3314882778.

The spelling of 8656985 in words is "eight million, six hundred fifty-six thousand, nine hundred eighty-five".