664912932 has 36 divisors (see below), whose sum is σ = 1577420208. Its totient is φ = 217989600.

The previous prime is 664912921. The next prime is 664912933. The reversal of 664912932 is 239219466.

It is not an unprimeable number, because it can be changed into a prime (664912933) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 37207 + ... + 52097.

It is an arithmetic number, because the mean of its divisors is an integer number (43817228).

Almost surely, 2^664912932 is an apocalyptic number.

It is an amenable number.

664912932 is an abundant number, since it is smaller than the sum of its proper divisors (912507276).

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

664912932 is a wasteful number, since it uses less digits than its factorization.

664912932 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15020 (or 14957 counting only the distinct ones).

The product of its digits is 139968, while the sum is 42.

The square root of 664912932 is about 25785.9056850831. The cubic root of 664912932 is about 872.8137778876.

The spelling of 664912932 in words is "six hundred sixty-four million, nine hundred twelve thousand, nine hundred thirty-two".