86805218 has 16 divisors (see below), whose sum is σ = 134852256. Its totient is φ = 41879040.

The previous prime is 86805211. The next prime is 86805221. The reversal of 86805218 is 81250868.

It is not an unprimeable number, because it can be changed into a prime (86805211) 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, 1058 + ... + 13218.

It is an arithmetic number, because the mean of its divisors is an integer number (8428266).

Almost surely, 2^86805218 is an apocalyptic number.

86805218 is a deficient number, since it is larger than the sum of its proper divisors (48047038).

86805218 is a wasteful number, since it uses less digits than its factorization.

86805218 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12289.

The product of its (nonzero) digits is 30720, while the sum is 38.

The square root of 86805218 is about 9316.9317910995. The cubic root of 86805218 is about 442.7738298953.

The spelling of 86805218 in words is "eighty-six million, eight hundred five thousand, two hundred eighteen".