668898187696 has 20 divisors (see below), whose sum is σ = 1296259656592. Its totient is φ = 334379566656.

The previous prime is 668898187691. The next prime is 668898187739. The reversal of 668898187696 is 696781898866.

It is not an unprimeable number, because it can be changed into a prime (668898187691) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4266036 + ... + 4420051.

Almost surely, 2^668898187696 is an apocalyptic number.

It is an amenable number.

668898187696 is a deficient number, since it is larger than the sum of its proper divisors (627361468896).

668898187696 is a wasteful number, since it uses less digits than its factorization.

668898187696 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8690908 (or 8690902 counting only the distinct ones).

The product of its digits is 3009871872, while the sum is 82.

The spelling of 668898187696 in words is "six hundred sixty-eight billion, eight hundred ninety-eight million, one hundred eighty-seven thousand, six hundred ninety-six".