8556928668 has 48 divisors (see below), whose sum is σ = 22220758560. Its totient is φ = 2847664512.

The previous prime is 8556928661. The next prime is 8556928747. The reversal of 8556928668 is 8668296558.

8556928668 is a `hidden beast` number, since 8 + 5 + 569 + 2 + 8 + 6 + 68 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8556928661) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2430 + ... + 130842.

It is an arithmetic number, because the mean of its divisors is an integer number (462932470).

Almost surely, 2^8556928668 is an apocalyptic number.

It is an amenable number.

8556928668 is an abundant number, since it is smaller than the sum of its proper divisors (13663829892).

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

8556928668 is a wasteful number, since it uses less digits than its factorization.

8556928668 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 129043 (or 129035 counting only the distinct ones).

The product of its digits is 49766400, while the sum is 63.

The square root of 8556928668 is about 92503.6684029342. The cubic root of 8556928668 is about 2045.3735580120.

The spelling of 8556928668 in words is "eight billion, five hundred fifty-six million, nine hundred twenty-eight thousand, six hundred sixty-eight".