681377118 has 16 divisors (see below), whose sum is σ = 1374815376. Its totient is φ = 225115520.

The previous prime is 681377111. The next prime is 681377143. The reversal of 681377118 is 811773186.

It is a self number, because there is not a number n which added to its sum of digits gives 681377118.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (681377111) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 501813 + ... + 503168.

It is an arithmetic number, because the mean of its divisors is an integer number (85925961).

Almost surely, 2^681377118 is an apocalyptic number.

681377118 is an abundant number, since it is smaller than the sum of its proper divisors (693438258).

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

681377118 is a wasteful number, since it uses less digits than its factorization.

681377118 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1005099.

The product of its digits is 56448, while the sum is 42.

The square root of 681377118 is about 26103.2012979251. The cubic root of 681377118 is about 879.9591570231.

The spelling of 681377118 in words is "six hundred eighty-one million, three hundred seventy-seven thousand, one hundred eighteen".