681474732 has 24 divisors (see below), whose sum is σ = 1633084656. Its totient is φ = 221018688.

The previous prime is 681474719. The next prime is 681474743. The reversal of 681474732 is 237474186.

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, 766983 + ... + 767870.

It is an arithmetic number, because the mean of its divisors is an integer number (68045194).

Almost surely, 2^681474732 is an apocalyptic number.

It is an amenable number.

681474732 is an abundant number, since it is smaller than the sum of its proper divisors (951609924).

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

681474732 is a wasteful number, since it uses less digits than its factorization.

681474732 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1534897 (or 1534895 counting only the distinct ones).

The product of its digits is 225792, while the sum is 42.

The square root of 681474732 is about 26105.0710016273. The cubic root of 681474732 is about 880.0011759626.

The spelling of 681474732 in words is "six hundred eighty-one million, four hundred seventy-four thousand, seven hundred thirty-two".