663808772 has 12 divisors (see below), whose sum is σ = 1267271376. Its totient is φ = 301731240.

The previous prime is 663808721. The next prime is 663808781. The reversal of 663808772 is 277808366.

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, 7543238 + ... + 7543325.

It is an arithmetic number, because the mean of its divisors is an integer number (105605948).

Almost surely, 2^663808772 is an apocalyptic number.

It is an amenable number.

663808772 is a deficient number, since it is larger than the sum of its proper divisors (603462604).

663808772 is a wasteful number, since it uses less digits than its factorization.

663808772 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15086578 (or 15086576 counting only the distinct ones).

The product of its (nonzero) digits is 677376, while the sum is 47.

The square root of 663808772 is about 25764.4866434400. The cubic root of 663808772 is about 872.3303762448.

The spelling of 663808772 in words is "six hundred sixty-three million, eight hundred eight thousand, seven hundred seventy-two".