86137218 has 12 divisors (see below), whose sum is σ = 186630678. Its totient is φ = 28712400.

The previous prime is 86137217. The next prime is 86137223. The reversal of 86137218 is 81273168.

It can be written as a sum of positive squares in only one way, i.e., 57653649 + 28483569 = 7593^2 + 5337^2 .

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (86137217) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2392683 + ... + 2392718.

Almost surely, 2^86137218 is an apocalyptic number.

86137218 is an abundant number, since it is smaller than the sum of its proper divisors (100493460).

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

86137218 is a wasteful number, since it uses less digits than its factorization.

86137218 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4785409 (or 4785406 counting only the distinct ones).

The product of its digits is 16128, while the sum is 36.

The square root of 86137218 is about 9281.0138454805. The cubic root of 86137218 is about 441.6351315485.

The spelling of 86137218 in words is "eighty-six million, one hundred thirty-seven thousand, two hundred eighteen".