8556668 has 6 divisors (see below), whose sum is σ = 14974176. Its totient is φ = 4278332.

The previous prime is 8556649. The next prime is 8556671. The reversal of 8556668 is 8666558.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1069580 + ... + 1069587.

It is an arithmetic number, because the mean of its divisors is an integer number (2495696).

Almost surely, 2^8556668 is an apocalyptic number.

It is an amenable number.

8556668 is a deficient number, since it is larger than the sum of its proper divisors (6417508).

8556668 is a wasteful number, since it uses less digits than its factorization.

8556668 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2139171 (or 2139169 counting only the distinct ones).

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

The square root of 8556668 is about 2925.1782851649. The cubic root of 8556668 is about 204.5352788533.

The spelling of 8556668 in words is "eight million, five hundred fifty-six thousand, six hundred sixty-eight".