664589370 has 32 divisors (see below), whose sum is σ = 1664364672. Its totient is φ = 169518272.

The previous prime is 664589363. The next prime is 664589399. The reversal of 664589370 is 73985466.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 480897 + ... + 482276.

It is an arithmetic number, because the mean of its divisors is an integer number (52011396).

Almost surely, 2^664589370 is an apocalyptic number.

664589370 is an abundant number, since it is smaller than the sum of its proper divisors (999775302).

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

664589370 is a wasteful number, since it uses less digits than its factorization.

664589370 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 963206.

The product of its (nonzero) digits is 1088640, while the sum is 48.

The square root of 664589370 is about 25779.6309127962. The cubic root of 664589370 is about 872.6721777976.

The spelling of 664589370 in words is "six hundred sixty-four million, five hundred eighty-nine thousand, three hundred seventy".