990317768 has 16 divisors (see below), whose sum is σ = 2025650160. Its totient is φ = 450144400.

The previous prime is 990317749. The next prime is 990317819. The reversal of 990317768 is 867713099.

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, 5626718 + ... + 5626893.

It is an arithmetic number, because the mean of its divisors is an integer number (126603135).

Almost surely, 2^990317768 is an apocalyptic number.

It is an amenable number.

990317768 is an abundant number, since it is smaller than the sum of its proper divisors (1035332392).

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

990317768 is a wasteful number, since it uses less digits than its factorization.

990317768 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11253628 (or 11253624 counting only the distinct ones).

The product of its (nonzero) digits is 571536, while the sum is 50.

The square root of 990317768 is about 31469.3147049630. The cubic root of 990317768 is about 996.7621167607.

The spelling of 990317768 in words is "nine hundred ninety million, three hundred seventeen thousand, seven hundred sixty-eight".