663822956 has 12 divisors (see below), whose sum is σ = 1161939240. Its totient is φ = 331840320.

The previous prime is 663822899. The next prime is 663822959. The reversal of 663822956 is 659228366.

It is a self number, because there is not a number n which added to its sum of digits gives 663822956.

It is not an unprimeable number, because it can be changed into a prime (663822959) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7055 + ... + 37113.

It is an arithmetic number, because the mean of its divisors is an integer number (96828270).

Almost surely, 2^663822956 is an apocalyptic number.

It is an amenable number.

663822956 is a deficient number, since it is larger than the sum of its proper divisors (498116284).

663822956 is a wasteful number, since it uses less digits than its factorization.

663822956 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35584 (or 35582 counting only the distinct ones).

The product of its digits is 933120, while the sum is 47.

The square root of 663822956 is about 25764.7619045859. The cubic root of 663822956 is about 872.3365894026.

The spelling of 663822956 in words is "six hundred sixty-three million, eight hundred twenty-two thousand, nine hundred fifty-six".