663800922 has 12 divisors (see below), whose sum is σ = 1438235370. Its totient is φ = 221266968.

The previous prime is 663800909. The next prime is 663800957. The reversal of 663800922 is 229008366.

It can be written as a sum of positive squares in only one way, i.e., 646735761 + 17065161 = 25431^2 + 4131^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 18438897 + ... + 18438932.

Almost surely, 2^663800922 is an apocalyptic number.

663800922 is an abundant number, since it is smaller than the sum of its proper divisors (774434448).

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

663800922 is a wasteful number, since it uses less digits than its factorization.

663800922 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36877837 (or 36877834 counting only the distinct ones).

The product of its (nonzero) digits is 31104, while the sum is 36.

The square root of 663800922 is about 25764.3343015107. The cubic root of 663800922 is about 872.3269375936.

The spelling of 663800922 in words is "six hundred sixty-three million, eight hundred thousand, nine hundred twenty-two".