680820681340 has 48 divisors (see below), whose sum is σ = 1434408192000. Its totient is φ = 271437406272.

The previous prime is 680820681323. The next prime is 680820681391. The reversal of 680820681340 is 43186028086.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7469361 + ... + 7559959.

It is an arithmetic number, because the mean of its divisors is an integer number (29883504000).

Almost surely, 2^680820681340 is an apocalyptic number.

It is an amenable number.

680820681340 is an abundant number, since it is smaller than the sum of its proper divisors (753587510660).

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

680820681340 is a wasteful number, since it uses less digits than its factorization.

680820681340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 91834 (or 91832 counting only the distinct ones).

The product of its (nonzero) digits is 442368, while the sum is 46.

The spelling of 680820681340 in words is "six hundred eighty billion, eight hundred twenty million, six hundred eighty-one thousand, three hundred forty".