681570112 has 28 divisors (see below), whose sum is σ = 1366446340. Its totient is φ = 337268736.

The previous prime is 681570079. The next prime is 681570139. The reversal of 681570112 is 211075186.

It can be written as a sum of positive squares in 2 ways, for example, as 345067776 + 336502336 = 18576^2 + 18344^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 48687 + ... + 61102.

It is an arithmetic number, because the mean of its divisors is an integer number (48801655).

Almost surely, 2^681570112 is an apocalyptic number.

It is an amenable number.

681570112 is an abundant number, since it is smaller than the sum of its proper divisors (684876228).

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

681570112 is a wasteful number, since it uses less digits than its factorization.

681570112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 109898 (or 109888 counting only the distinct ones).

The product of its (nonzero) digits is 3360, while the sum is 31.

The square root of 681570112 is about 26106.8977858343. The cubic root of 681570112 is about 880.0422293784.

The spelling of 681570112 in words is "six hundred eighty-one million, five hundred seventy thousand, one hundred twelve".