666130664 has 32 divisors (see below), whose sum is σ = 1264710720. Its totient is φ = 328893696.

The previous prime is 666130651. The next prime is 666130679. The reversal of 666130664 is 466031666.

666130664 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a hoax number, since the sum of its digits (38) coincides with the sum of the digits of its distinct prime factors.

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, 355859 + ... + 357725.

It is an arithmetic number, because the mean of its divisors is an integer number (39522210).

Almost surely, 2^666130664 is an apocalyptic number.

It is an amenable number.

666130664 is a deficient number, since it is larger than the sum of its proper divisors (598580056).

666130664 is a wasteful number, since it uses less digits than its factorization.

666130664 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2409 (or 2405 counting only the distinct ones).

The product of its (nonzero) digits is 93312, while the sum is 38.

The square root of 666130664 is about 25809.5072405499. The cubic root of 666130664 is about 873.3462812343.

The spelling of 666130664 in words is "six hundred sixty-six million, one hundred thirty thousand, six hundred sixty-four".