681057076 has 36 divisors (see below), whose sum is σ = 1423924068. Its totient is φ = 283989888.

The previous prime is 681057067. The next prime is 681057107. The reversal of 681057076 is 670750186.

It can be written as a sum of positive squares in 2 ways, for example, as 539447076 + 141610000 = 23226^2 + 11900^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 39705 + ... + 54208.

Almost surely, 2^681057076 is an apocalyptic number.

It is an amenable number.

681057076 is an abundant number, since it is smaller than the sum of its proper divisors (742866992).

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

681057076 is a wasteful number, since it uses less digits than its factorization.

681057076 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 93968 (or 93959 counting only the distinct ones).

The product of its (nonzero) digits is 70560, while the sum is 40.

The square root of 681057076 is about 26097.0702570231. The cubic root of 681057076 is about 879.8213635334.

The spelling of 681057076 in words is "six hundred eighty-one million, fifty-seven thousand, seventy-six".