662993868 has 18 divisors (see below), whose sum is σ = 1547193844. Its totient is φ = 220968224.

The previous prime is 662993857. The next prime is 662993873. The reversal of 662993868 is 868399266.

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, 85480 + ... + 92912.

Almost surely, 2^662993868 is an apocalyptic number.

It is an amenable number.

662993868 is an abundant number, since it is smaller than the sum of its proper divisors (884199976).

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

662993868 is an frugal number, since it uses more digits than its factorization.

662993868 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14873 (or 7438 counting only the distinct ones).

The product of its digits is 6718464, while the sum is 57.

The square root of 662993868 is about 25748.6673053189. The cubic root of 662993868 is about 871.9732670732.

The spelling of 662993868 in words is "six hundred sixty-two million, nine hundred ninety-three thousand, eight hundred sixty-eight".