664304408 has 16 divisors (see below), whose sum is σ = 1246461480. Its totient is φ = 331914688.

The previous prime is 664304383. The next prime is 664304413. The reversal of 664304408 is 804403466.

It is a happy number.

664304408 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 17510 + ... + 40437.

Almost surely, 2^664304408 is an apocalyptic number.

It is an amenable number.

664304408 is a deficient number, since it is larger than the sum of its proper divisors (582157072).

664304408 is a wasteful number, since it uses less digits than its factorization.

664304408 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 59386 (or 59382 counting only the distinct ones).

The product of its (nonzero) digits is 55296, while the sum is 35.

The square root of 664304408 is about 25774.1034373652. The cubic root of 664304408 is about 872.5474321168.

The spelling of 664304408 in words is "six hundred sixty-four million, three hundred four thousand, four hundred eight".