681107964 has 24 divisors (see below), whose sum is σ = 1593056640. Its totient is φ = 226492464.

The previous prime is 681107939. The next prime is 681107971. The reversal of 681107964 is 469701186.

681107964 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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, 62704 + ... + 72759.

It is an arithmetic number, because the mean of its divisors is an integer number (66377360).

Almost surely, 2^681107964 is an apocalyptic number.

It is an amenable number.

681107964 is an abundant number, since it is smaller than the sum of its proper divisors (911948676).

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

681107964 is a wasteful number, since it uses less digits than its factorization.

681107964 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 135889 (or 135887 counting only the distinct ones).

The product of its (nonzero) digits is 72576, while the sum is 42.

The square root of 681107964 is about 26098.0452141535. The cubic root of 681107964 is about 879.8432761532.

The spelling of 681107964 in words is "six hundred eighty-one million, one hundred seven thousand, nine hundred sixty-four".