681892596 has 288 divisors, whose sum is σ = 2302110720. Its totient is φ = 166224960.

The previous prime is 681892579. The next prime is 681892609. The reversal of 681892596 is 695298186.

It is a happy number.

681892596 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 95 ways as a sum of consecutive naturals, for example, 6372775 + ... + 6372881.

It is an arithmetic number, because the mean of its divisors is an integer number (7993440).

Almost surely, 2^681892596 is an apocalyptic number.

681892596 is a gapful number since it is divisible by the number (66) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 681892596, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1151055360).

681892596 is an abundant number, since it is smaller than the sum of its proper divisors (1620218124).

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

681892596 is a wasteful number, since it uses less digits than its factorization.

681892596 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 176 (or 149 counting only the distinct ones).

The product of its digits is 1866240, while the sum is 54.

The square root of 681892596 is about 26113.0732775750. The cubic root of 681892596 is about 880.1810044339.

The spelling of 681892596 in words is "six hundred eighty-one million, eight hundred ninety-two thousand, five hundred ninety-six".