8712666664 has 32 divisors (see below), whose sum is σ = 17655109920. Its totient is φ = 4007007936.

The previous prime is 8712666631. The next prime is 8712666671. The reversal of 8712666664 is 4666662178.

It is a Harshad number since it is a multiple of its sum of digits (52).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 118582 + ... + 177445.

It is an arithmetic number, because the mean of its divisors is an integer number (551722185).

Almost surely, 2^8712666664 is an apocalyptic number.

It is an amenable number.

8712666664 is an abundant number, since it is smaller than the sum of its proper divisors (8942443256).

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

8712666664 is a wasteful number, since it uses less digits than its factorization.

8712666664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 296329 (or 296325 counting only the distinct ones).

The product of its digits is 3483648, while the sum is 52.

The square root of 8712666664 is about 93341.6662803916. Note that the first 3 decimals coincide. The cubic root of 8712666664 is about 2057.7077799225.

The spelling of 8712666664 in words is "eight billion, seven hundred twelve million, six hundred sixty-six thousand, six hundred sixty-four".