663704056 has 16 divisors (see below), whose sum is σ = 1245693600. Its totient is φ = 331519104.

The previous prime is 663704053. The next prime is 663704071. The reversal of 663704056 is 650407366.

It is a super-2 number, since 2×663704056² = 881006147901702272, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (663704053) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 33040 + ... + 49183.

It is an arithmetic number, because the mean of its divisors is an integer number (77855850).

Almost surely, 2^663704056 is an apocalyptic number.

It is an amenable number.

663704056 is a deficient number, since it is larger than the sum of its proper divisors (581989544).

663704056 is a wasteful number, since it uses less digits than its factorization.

663704056 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 83238 (or 83234 counting only the distinct ones).

The product of its (nonzero) digits is 90720, while the sum is 37.

The square root of 663704056 is about 25762.4543861799. The cubic root of 663704056 is about 872.2845037208.

The spelling of 663704056 in words is "six hundred sixty-three million, seven hundred four thousand, fifty-six".