680193640670 has 64 divisors (see below), whose sum is σ = 1273577247360. Its totient is φ = 261344143872.

The previous prime is 680193640661. The next prime is 680193640699. The reversal of 680193640670 is 76046391086.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 11140967 + ... + 11201853.

It is an arithmetic number, because the mean of its divisors is an integer number (19899644490).

Almost surely, 2^680193640670 is an apocalyptic number.

680193640670 is a deficient number, since it is larger than the sum of its proper divisors (593383606690).

680193640670 is a wasteful number, since it uses less digits than its factorization.

680193640670 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 61317.

The product of its (nonzero) digits is 1306368, while the sum is 50.

The spelling of 680193640670 in words is "six hundred eighty billion, one hundred ninety-three million, six hundred forty thousand, six hundred seventy".