664913008 has 20 divisors (see below), whose sum is σ = 1310105880. Its totient is φ = 326821184.

The previous prime is 664912987. The next prime is 664913063. The reversal of 664913008 is 800319466.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 351235 + ... + 353122.

It is an arithmetic number, because the mean of its divisors is an integer number (65505294).

Almost surely, 2^664913008 is an apocalyptic number.

It is an amenable number.

664913008 is a deficient number, since it is larger than the sum of its proper divisors (645192872).

664913008 is a wasteful number, since it uses less digits than its factorization.

664913008 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 704424 (or 704418 counting only the distinct ones).

The product of its (nonzero) digits is 31104, while the sum is 37.

The square root of 664913008 is about 25785.9071587563. The cubic root of 664913008 is about 872.8138111420.

The spelling of 664913008 in words is "six hundred sixty-four million, nine hundred thirteen thousand, eight".