663440504 has 16 divisors (see below), whose sum is σ = 1317124800. Its totient is φ = 312207232.

The previous prime is 663440489. The next prime is 663440549. The reversal of 663440504 is 405044366.

663440504 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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, 2438984 + ... + 2439255.

It is an arithmetic number, because the mean of its divisors is an integer number (82320300).

Almost surely, 2^663440504 is an apocalyptic number.

It is an amenable number.

663440504 is a deficient number, since it is larger than the sum of its proper divisors (653684296).

663440504 is a wasteful number, since it uses less digits than its factorization.

663440504 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4878262 (or 4878258 counting only the distinct ones).

The product of its (nonzero) digits is 34560, while the sum is 32.

The square root of 663440504 is about 25757.3388376983. The cubic root of 663440504 is about 872.1690291808.

The spelling of 663440504 in words is "six hundred sixty-three million, four hundred forty thousand, five hundred four".