664116604 has 6 divisors (see below), whose sum is σ = 1162204064. Its totient is φ = 332058300.

The previous prime is 664116587. The next prime is 664116619. The reversal of 664116604 is 406611466.

It is a self number, because there is not a number n which added to its sum of digits gives 664116604.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 83014572 + ... + 83014579.

Almost surely, 2^664116604 is an apocalyptic number.

It is an amenable number.

664116604 is a deficient number, since it is larger than the sum of its proper divisors (498087460).

664116604 is a wasteful number, since it uses less digits than its factorization.

664116604 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 166029155 (or 166029153 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 34.

The square root of 664116604 is about 25770.4599105255. The cubic root of 664116604 is about 872.4651990618.

The spelling of 664116604 in words is "six hundred sixty-four million, one hundred sixteen thousand, six hundred four".