668380807704 has 16 divisors (see below), whose sum is σ = 1670952019320. Its totient is φ = 222793602560.

The previous prime is 668380807669. The next prime is 668380807723. The reversal of 668380807704 is 407708083866.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13924600137 + ... + 13924600184.

Almost surely, 2^668380807704 is an apocalyptic number.

It is an amenable number.

668380807704 is an abundant number, since it is smaller than the sum of its proper divisors (1002571211616).

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

668380807704 is a wasteful number, since it uses less digits than its factorization.

668380807704 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27849200330 (or 27849200326 counting only the distinct ones).

The product of its (nonzero) digits is 10838016, while the sum is 57.

The spelling of 668380807704 in words is "six hundred sixty-eight billion, three hundred eighty million, eight hundred seven thousand, seven hundred four".