681025597 has 16 divisors (see below), whose sum is σ = 794776320. Its totient is φ = 571519872.

The previous prime is 681025547. The next prime is 681025601. The reversal of 681025597 is 795520186.

It is not a de Polignac number, because 681025597 - 2²⁷ = 546807869 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (681025517) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 58863 + ... + 69475.

It is an arithmetic number, because the mean of its divisors is an integer number (49673520).

Almost surely, 2^681025597 is an apocalyptic number.

It is an amenable number.

681025597 is a deficient number, since it is larger than the sum of its proper divisors (113750723).

681025597 is a wasteful number, since it uses less digits than its factorization.

681025597 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10812.

The product of its (nonzero) digits is 151200, while the sum is 43.

The square root of 681025597 is about 26096.4671363769. The cubic root of 681025597 is about 879.8078079767.

The spelling of 681025597 in words is "six hundred eighty-one million, twenty-five thousand, five hundred ninety-seven".