681795768 has 32 divisors (see below), whose sum is σ = 1714352400. Its totient is φ = 225950208.

The previous prime is 681795757. The next prime is 681795773. The reversal of 681795768 is 867597186.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 77953 + ... + 86256.

Almost surely, 2^681795768 is an apocalyptic number.

It is an amenable number.

681795768 is an abundant number, since it is smaller than the sum of its proper divisors (1032556632).

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

681795768 is a wasteful number, since it uses less digits than its factorization.

681795768 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 164391 (or 164387 counting only the distinct ones).

The product of its digits is 5080320, while the sum is 57.

The square root of 681795768 is about 26111.2191978850. The cubic root of 681795768 is about 880.1393408830.

The spelling of 681795768 in words is "six hundred eighty-one million, seven hundred ninety-five thousand, seven hundred sixty-eight".