681258318 has 32 divisors (see below), whose sum is σ = 1473454752. Its totient is φ = 208742400.

The previous prime is 681258311. The next prime is 681258349. The reversal of 681258318 is 813852186.

681258318 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×681258318² = 928225791688378248, which contains 22 as substring.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 681258318.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (681258311) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 678 + ... + 36918.

It is an arithmetic number, because the mean of its divisors is an integer number (46045461).

Almost surely, 2^681258318 is an apocalyptic number.

681258318 is an abundant number, since it is smaller than the sum of its proper divisors (792196434).

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

681258318 is a wasteful number, since it uses less digits than its factorization.

681258318 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36500.

The product of its digits is 92160, while the sum is 42.

The square root of 681258318 is about 26100.9256157708. The cubic root of 681258318 is about 879.9080129400.

The spelling of 681258318 in words is "six hundred eighty-one million, two hundred fifty-eight thousand, three hundred eighteen".