681288170 has 16 divisors (see below), whose sum is σ = 1226835720. Its totient is φ = 272400384.

The previous prime is 681288169. The next prime is 681288197. The reversal of 681288170 is 71882186.

681288170 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 573937849 + 107350321 = 23957^2 + 10361^2 .

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, 13034 + ... + 39146.

Almost surely, 2^681288170 is an apocalyptic number.

681288170 is a deficient number, since it is larger than the sum of its proper divisors (545547550).

681288170 is a wasteful number, since it uses less digits than its factorization.

681288170 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28729.

The product of its (nonzero) digits is 43008, while the sum is 41.

The square root of 681288170 is about 26101.4974666206. The cubic root of 681288170 is about 879.9208649569.

The spelling of 681288170 in words is "six hundred eighty-one million, two hundred eighty-eight thousand, one hundred seventy".