663296872 has 16 divisors (see below), whose sum is σ = 1421350560. Its totient is φ = 284270064.

The previous prime is 663296869. The next prime is 663296899. The reversal of 663296872 is 278692366.

It is a happy 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, 5922238 + ... + 5922349.

It is an arithmetic number, because the mean of its divisors is an integer number (88834410).

Almost surely, 2^663296872 is an apocalyptic number.

It is an amenable number.

663296872 is an abundant number, since it is smaller than the sum of its proper divisors (758053688).

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

663296872 is a wasteful number, since it uses less digits than its factorization.

663296872 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11844600 (or 11844596 counting only the distinct ones).

The product of its digits is 1306368, while the sum is 49.

The square root of 663296872 is about 25754.5505105409. The cubic root of 663296872 is about 872.1060843638.

The spelling of 663296872 in words is "six hundred sixty-three million, two hundred ninety-six thousand, eight hundred seventy-two".