663808512 has 40 divisors (see below), whose sum is σ = 1768431456. Its totient is φ = 221268992.

The previous prime is 663808511. The next prime is 663808513. The reversal of 663808512 is 215808366.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (663808511) and next prime (663808513).

It is not an unprimeable number, because it can be changed into a prime (663808511) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 214548 + ... + 217619.

Almost surely, 2^663808512 is an apocalyptic number.

It is an amenable number.

663808512 is an abundant number, since it is smaller than the sum of its proper divisors (1104622944).

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

663808512 is an equidigital number, since it uses as much as digits as its factorization.

663808512 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 432188 (or 432172 counting only the distinct ones).

The product of its (nonzero) digits is 69120, while the sum is 39.

The square root of 663808512 is about 25764.4815977345. The cubic root of 663808512 is about 872.3302623536.

The spelling of 663808512 in words is "six hundred sixty-three million, eight hundred eight thousand, five hundred twelve".