663064912 has 20 divisors (see below), whose sum is σ = 1285357216. Its totient is φ = 331359840.

The previous prime is 663064891. The next prime is 663064931. The reversal of 663064912 is 219460366.

It is a happy number.

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, 24373 + ... + 43819.

Almost surely, 2^663064912 is an apocalyptic number.

It is an amenable number.

663064912 is a deficient number, since it is larger than the sum of its proper divisors (622292304).

663064912 is a wasteful number, since it uses less digits than its factorization.

663064912 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21586 (or 21580 counting only the distinct ones).

The product of its (nonzero) digits is 46656, while the sum is 37.

The square root of 663064912 is about 25750.0468349089. The cubic root of 663064912 is about 872.0044117836.

The spelling of 663064912 in words is "six hundred sixty-three million, sixty-four thousand, nine hundred twelve".