681348074808 has 32 divisors (see below), whose sum is σ = 1703476776960. Its totient is φ = 227101812960.

The previous prime is 681348074773. The next prime is 681348074833. The reversal of 681348074808 is 808470843186.

It is a happy number.

It is a congruent number.

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, 493138 + ... + 1267233.

It is an arithmetic number, because the mean of its divisors is an integer number (53233649280).

Almost surely, 2^681348074808 is an apocalyptic number.

It is an amenable number.

681348074808 is an abundant number, since it is smaller than the sum of its proper divisors (1022128702152).

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

681348074808 is a wasteful number, since it uses less digits than its factorization.

681348074808 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1776507 (or 1776503 counting only the distinct ones).

The product of its (nonzero) digits is 8257536, while the sum is 57.

The spelling of 681348074808 in words is "six hundred eighty-one billion, three hundred forty-eight million, seventy-four thousand, eight hundred eight".