680520080668 has 48 divisors (see below), whose sum is σ = 1225427374080. Its totient is φ = 330474672000.

The previous prime is 680520080659. The next prime is 680520080743. The reversal of 680520080668 is 866080025086.

It is a happy number.

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 15 ways as a sum of consecutive naturals, for example, 53413843 + ... + 53426581.

It is an arithmetic number, because the mean of its divisors is an integer number (25529736960).

Almost surely, 2^680520080668 is an apocalyptic number.

It is an amenable number.

680520080668 is a deficient number, since it is larger than the sum of its proper divisors (544907293412).

680520080668 is a wasteful number, since it uses less digits than its factorization.

680520080668 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14218 (or 14216 counting only the distinct ones).

The product of its (nonzero) digits is 1105920, while the sum is 49.

The spelling of 680520080668 in words is "six hundred eighty billion, five hundred twenty million, eighty thousand, six hundred sixty-eight".