668828665300 has 72 divisors (see below), whose sum is σ = 1530668871200. Its totient is φ = 252965877120.

The previous prime is 668828665279. The next prime is 668828665327. The reversal of 668828665300 is 3566828866.

It is a hoax number, since the sum of its digits (58) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 657166 + ... + 1330234.

Almost surely, 2^668828665300 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 668828665300, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (765334435600).

668828665300 is an abundant number, since it is smaller than the sum of its proper divisors (861840205900).

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

668828665300 is a wasteful number, since it uses less digits than its factorization.

668828665300 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 673625 (or 673618 counting only the distinct ones).

The product of its (nonzero) digits is 19906560, while the sum is 58.

The spelling of 668828665300 in words is "six hundred sixty-eight billion, eight hundred twenty-eight million, six hundred sixty-five thousand, three hundred".