680373191 has 8 divisors (see below), whose sum is σ = 701654400. Its totient is φ = 659417080.

The previous prime is 680373181. The next prime is 680373203. The reversal of 680373191 is 191373086.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-680373191 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (680373101) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 77021 + ... + 85398.

It is an arithmetic number, because the mean of its divisors is an integer number (87706800).

Almost surely, 2^680373191 is an apocalyptic number.

680373191 is a deficient number, since it is larger than the sum of its proper divisors (21281209).

680373191 is a wasteful number, since it uses less digits than its factorization.

680373191 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 162549.

The product of its (nonzero) digits is 27216, while the sum is 38.

The square root of 680373191 is about 26083.9642500905. The cubic root of 680373191 is about 879.5267733709.

The spelling of 680373191 in words is "six hundred eighty million, three hundred seventy-three thousand, one hundred ninety-one".