664704748 has 6 divisors (see below), whose sum is σ = 1163233316. Its totient is φ = 332352372.

The previous prime is 664704731. The next prime is 664704757. The reversal of 664704748 is 847407466.

It is a junction number, because it is equal to n+sod(n) for n = 664704698 and 664704707.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 83088090 + ... + 83088097.

Almost surely, 2^664704748 is an apocalyptic number.

It is an amenable number.

664704748 is a deficient number, since it is larger than the sum of its proper divisors (498528568).

664704748 is a wasteful number, since it uses less digits than its factorization.

664704748 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 166176191 (or 166176189 counting only the distinct ones).

The product of its (nonzero) digits is 903168, while the sum is 46.

The square root of 664704748 is about 25781.8685901546. The cubic root of 664704748 is about 872.7226758189.

The spelling of 664704748 in words is "six hundred sixty-four million, seven hundred four thousand, seven hundred forty-eight".