663504885 has 32 divisors (see below), whose sum is σ = 1191041280. Its totient is φ = 350426304.

The previous prime is 663504859. The next prime is 663504889. The reversal of 663504885 is 588405366.

663504885 is a `hidden beast` number, since 6 + 63 + 504 + 8 + 85 = 666.

It is not a de Polignac number, because 663504885 - 2⁸ = 663504629 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 663504885.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (663504889) 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 31 ways as a sum of consecutive naturals, for example, 9954 + ... + 37763.

It is an arithmetic number, because the mean of its divisors is an integer number (37220040).

Almost surely, 2^663504885 is an apocalyptic number.

It is an amenable number.

663504885 is a deficient number, since it is larger than the sum of its proper divisors (527536395).

663504885 is a wasteful number, since it uses less digits than its factorization.

663504885 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47834 (or 47828 counting only the distinct ones).

The product of its (nonzero) digits is 691200, while the sum is 45.

The square root of 663504885 is about 25758.5885676991. The cubic root of 663504885 is about 872.1972403505.

The spelling of 663504885 in words is "six hundred sixty-three million, five hundred four thousand, eight hundred eighty-five".