680726308940 has 12 divisors (see below), whose sum is σ = 1429525248816. Its totient is φ = 272290523568.

The previous prime is 680726308939. The next prime is 680726308967. The reversal of 680726308940 is 49803627086.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 17018157704 + ... + 17018157743.

It is an arithmetic number, because the mean of its divisors is an integer number (119127104068).

Almost surely, 2^680726308940 is an apocalyptic number.

It is an amenable number.

680726308940 is an abundant number, since it is smaller than the sum of its proper divisors (748798939876).

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

680726308940 is a wasteful number, since it uses less digits than its factorization.

680726308940 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34036315456 (or 34036315454 counting only the distinct ones).

The product of its (nonzero) digits is 3483648, while the sum is 53.

The spelling of 680726308940 in words is "six hundred eighty billion, seven hundred twenty-six million, three hundred eight thousand, nine hundred forty".