681757874 has 24 divisors (see below), whose sum is σ = 1190939760. Its totient is φ = 291852456.

The previous prime is 681757861. The next prime is 681757891. The reversal of 681757874 is 478757186.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 96449 + ... + 103275.

It is an arithmetic number, because the mean of its divisors is an integer number (49622490).

Almost surely, 2^681757874 is an apocalyptic number.

681757874 is a deficient number, since it is larger than the sum of its proper divisors (509181886).

681757874 is a wasteful number, since it uses less digits than its factorization.

681757874 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7862 (or 7855 counting only the distinct ones).

The product of its digits is 2634240, while the sum is 53.

The square root of 681757874 is about 26110.4935610187. The cubic root of 681757874 is about 880.1230346225.

The spelling of 681757874 in words is "six hundred eighty-one million, seven hundred fifty-seven thousand, eight hundred seventy-four".