681759792 has 60 divisors (see below), whose sum is σ = 2180552400. Its totient is φ = 194788224.

The previous prime is 681759751. The next prime is 681759803. The reversal of 681759792 is 297957186.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 337167 + ... + 339182.

It is an arithmetic number, because the mean of its divisors is an integer number (36342540).

Almost surely, 2^681759792 is an apocalyptic number.

It is an amenable number.

681759792 is an abundant number, since it is smaller than the sum of its proper divisors (1498792608).

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

681759792 is a wasteful number, since it uses less digits than its factorization.

681759792 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 676370 (or 676361 counting only the distinct ones).

The product of its digits is 1905120, while the sum is 54.

The square root of 681759792 is about 26110.5302895211. The cubic root of 681759792 is about 880.1238599764.

The spelling of 681759792 in words is "six hundred eighty-one million, seven hundred fifty-nine thousand, seven hundred ninety-two".