86840018 has 8 divisors (see below), whose sum is σ = 130915200. Its totient is φ = 43201620.

The previous prime is 86840011. The next prime is 86840041. The reversal of 86840018 is 81004868.

It is a sphenic number, since it is the product of 3 distinct primes.

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 86840018.

It is not an unprimeable number, because it can be changed into a prime (86840011) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 108698 + ... + 109493.

It is an arithmetic number, because the mean of its divisors is an integer number (16364400).

Almost surely, 2^86840018 is an apocalyptic number.

86840018 is a deficient number, since it is larger than the sum of its proper divisors (44075182).

86840018 is a wasteful number, since it uses less digits than its factorization.

86840018 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 218392.

The product of its (nonzero) digits is 12288, while the sum is 35.

The square root of 86840018 is about 9318.7991715671. The cubic root of 86840018 is about 442.8329909726.

The spelling of 86840018 in words is "eighty-six million, eight hundred forty thousand, eighteen".