681189134 has 32 divisors (see below), whose sum is σ = 1065173760. Its totient is φ = 326538432.

The previous prime is 681189097. The next prime is 681189163. The reversal of 681189134 is 431981186.

It is a junction number, because it is equal to n+sod(n) for n = 681189091 and 681189100.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 811487 + ... + 812325.

It is an arithmetic number, because the mean of its divisors is an integer number (33286680).

Almost surely, 2^681189134 is an apocalyptic number.

681189134 is a deficient number, since it is larger than the sum of its proper divisors (383984626).

681189134 is a wasteful number, since it uses less digits than its factorization.

681189134 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1064.

The product of its digits is 41472, while the sum is 41.

The square root of 681189134 is about 26099.6002651382. The cubic root of 681189134 is about 879.8782260905.

The spelling of 681189134 in words is "six hundred eighty-one million, one hundred eighty-nine thousand, one hundred thirty-four".