681811675 has 36 divisors (see below), whose sum is σ = 921446976. Its totient is φ = 499867200.

The previous prime is 681811661. The next prime is 681811687. The reversal of 681811675 is 576118186.

It is not a de Polignac number, because 681811675 - 2⁵ = 681811643 is a prime.

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 35 ways as a sum of consecutive naturals, for example, 278557 + ... + 280993.

Almost surely, 2^681811675 is an apocalyptic number.

681811675 is a deficient number, since it is larger than the sum of its proper divisors (239635301).

681811675 is a wasteful number, since it uses less digits than its factorization.

681811675 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2516 (or 2492 counting only the distinct ones).

The product of its digits is 80640, while the sum is 43.

The square root of 681811675 is about 26111.5237969752. The cubic root of 681811675 is about 880.1461856833.

The spelling of 681811675 in words is "six hundred eighty-one million, eight hundred eleven thousand, six hundred seventy-five".