8668556 has 12 divisors (see below), whose sum is σ = 16336992. Its totient is φ = 4000848.

The previous prime is 8668553. The next prime is 8668571. The reversal of 8668556 is 6558668.

It is not an unprimeable number, because it can be changed into a prime (8668553) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 83300 + ... + 83403.

It is an arithmetic number, because the mean of its divisors is an integer number (1361416).

Almost surely, 2^8668556 is an apocalyptic number.

It is an amenable number.

8668556 is a deficient number, since it is larger than the sum of its proper divisors (7668436).

8668556 is a wasteful number, since it uses less digits than its factorization.

8668556 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 166720 (or 166718 counting only the distinct ones).

The product of its digits is 345600, while the sum is 44.

The square root of 8668556 is about 2944.2411586010. The cubic root of 8668556 is about 205.4229301555.

The spelling of 8668556 in words is "eight million, six hundred sixty-eight thousand, five hundred fifty-six".