680734140140 has 24 divisors (see below), whose sum is σ = 1456514181360. Its totient is φ = 267156039488.

The previous prime is 680734140139. The next prime is 680734140173. The reversal of 680734140140 is 41041437086.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 680734140094 and 680734140103.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 321099950 + ... + 321102069.

It is an arithmetic number, because the mean of its divisors is an integer number (60688090890).

Almost surely, 2^680734140140 is an apocalyptic number.

It is an amenable number.

680734140140 is an abundant number, since it is smaller than the sum of its proper divisors (775780041220).

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

680734140140 is a wasteful number, since it uses less digits than its factorization.

680734140140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 642202081 (or 642202079 counting only the distinct ones).

The product of its (nonzero) digits is 64512, while the sum is 38.

The spelling of 680734140140 in words is "six hundred eighty billion, seven hundred thirty-four million, one hundred forty thousand, one hundred forty".