663923118 has 16 divisors (see below), whose sum is σ = 1397733120. Its totient is φ = 209659896.

The previous prime is 663923089. The next prime is 663923131. The reversal of 663923118 is 811329366.

It is a super-2 number, since 2×663923118² = 881587813229683848, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2911830 + ... + 2912057.

It is an arithmetic number, because the mean of its divisors is an integer number (87358320).

Almost surely, 2^663923118 is an apocalyptic number.

663923118 is an abundant number, since it is smaller than the sum of its proper divisors (733810002).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

663923118 is a wasteful number, since it uses less digits than its factorization.

663923118 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5823911.

The product of its digits is 46656, while the sum is 39.

The square root of 663923118 is about 25766.7056101474. The cubic root of 663923118 is about 872.3804618350.

The spelling of 663923118 in words is "six hundred sixty-three million, nine hundred twenty-three thousand, one hundred eighteen".