681176892 has 48 divisors (see below), whose sum is σ = 1739549952. Its totient is φ = 205745280.

The previous prime is 681176831. The next prime is 681176939. The reversal of 681176892 is 298671186.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 33073 + ... + 49559.

It is an arithmetic number, because the mean of its divisors is an integer number (36240624).

Almost surely, 2^681176892 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 681176892, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (869774976).

681176892 is an abundant number, since it is smaller than the sum of its proper divisors (1058373060).

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

681176892 is a wasteful number, since it uses less digits than its factorization.

681176892 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16818 (or 16816 counting only the distinct ones).

The product of its digits is 290304, while the sum is 48.

The square root of 681176892 is about 26099.3657394198. The cubic root of 681176892 is about 879.8729551444.

The spelling of 681176892 in words is "six hundred eighty-one million, one hundred seventy-six thousand, eight hundred ninety-two".