664343304 has 32 divisors (see below), whose sum is σ = 1689012000. Its totient is φ = 217693952.

The previous prime is 664343243. The next prime is 664343327. The reversal of 664343304 is 403343466.

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, 233169 + ... + 236000.

It is an arithmetic number, because the mean of its divisors is an integer number (52781625).

Almost surely, 2^664343304 is an apocalyptic number.

It is an amenable number.

664343304 is an abundant number, since it is smaller than the sum of its proper divisors (1024668696).

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

664343304 is a wasteful number, since it uses less digits than its factorization.

664343304 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 469237 (or 469233 counting only the distinct ones).

The product of its (nonzero) digits is 62208, while the sum is 33.

The square root of 664343304 is about 25774.8579821500. The cubic root of 664343304 is about 872.5644614295.

The spelling of 664343304 in words is "six hundred sixty-four million, three hundred forty-three thousand, three hundred four".