681833718 has 24 divisors (see below), whose sum is σ = 1478513088. Its totient is φ = 227092272.

The previous prime is 681833701. The next prime is 681833723. The reversal of 681833718 is 817338186.

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 11 ways as a sum of consecutive naturals, for example, 8155 + ... + 37817.

It is an arithmetic number, because the mean of its divisors is an integer number (61604712).

Almost surely, 2^681833718 is an apocalyptic number.

681833718 is an abundant number, since it is smaller than the sum of its proper divisors (796679370).

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

681833718 is a wasteful number, since it uses less digits than its factorization.

681833718 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30948 (or 30945 counting only the distinct ones).

The product of its digits is 193536, while the sum is 45.

The square root of 681833718 is about 26111.9458868925. The cubic root of 681833718 is about 880.1556706354.

The spelling of 681833718 in words is "six hundred eighty-one million, eight hundred thirty-three thousand, seven hundred eighteen".