663774008 has 16 divisors (see below), whose sum is σ = 1244850000. Its totient is φ = 331814016.

The previous prime is 663773989. The next prime is 663774019. The reversal of 663774008 is 800477366.

It is a congruent number.

It is an unprimeable number.

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, 63968 + ... + 73616.

It is an arithmetic number, because the mean of its divisors is an integer number (77803125).

Almost surely, 2^663774008 is an apocalyptic number.

It is an amenable number.

663774008 is a deficient number, since it is larger than the sum of its proper divisors (581075992).

663774008 is a wasteful number, since it uses less digits than its factorization.

663774008 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18254 (or 18250 counting only the distinct ones).

The product of its (nonzero) digits is 169344, while the sum is 41.

The square root of 663774008 is about 25763.8119850305. The cubic root of 663774008 is about 872.3151478518.

The spelling of 663774008 in words is "six hundred sixty-three million, seven hundred seventy-four thousand, eight".