86881218 has 16 divisors (see below), whose sum is σ = 175387680. Its totient is φ = 28689536.

The previous prime is 86881213. The next prime is 86881229. The reversal of 86881218 is 81218868.

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 86881218.

It is not an unprimeable number, because it can be changed into a prime (86881213) 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, 67023 + ... + 68306.

It is an arithmetic number, because the mean of its divisors is an integer number (10961730).

Almost surely, 2^86881218 is an apocalyptic number.

86881218 is an abundant number, since it is smaller than the sum of its proper divisors (88506462).

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

86881218 is a wasteful number, since it uses less digits than its factorization.

86881218 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 135441.

The product of its digits is 49152, while the sum is 42.

The square root of 86881218 is about 9321.0094946846. The cubic root of 86881218 is about 442.9030118190.

The spelling of 86881218 in words is "eighty-six million, eight hundred eighty-one thousand, two hundred eighteen".