664096904 has 8 divisors (see below), whose sum is σ = 1245181710. Its totient is φ = 332048448.

The previous prime is 664096847. The next prime is 664096913. The reversal of 664096904 is 409690466.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 639988804 + 24108100 = 25298^2 + 4910^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 41506049 + ... + 41506064.

Almost surely, 2^664096904 is an apocalyptic number.

It is an amenable number.

664096904 is a deficient number, since it is larger than the sum of its proper divisors (581084806).

664096904 is a wasteful number, since it uses less digits than its factorization.

664096904 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 83012119 (or 83012115 counting only the distinct ones).

The product of its (nonzero) digits is 279936, while the sum is 44.

The square root of 664096904 is about 25770.0776871161. The cubic root of 664096904 is about 872.4565721961.

The spelling of 664096904 in words is "six hundred sixty-four million, ninety-six thousand, nine hundred four".