86218137 has 12 divisors (see below), whose sum is σ = 124636720. Its totient is φ = 57432888.

The previous prime is 86218133. The next prime is 86218199. The reversal of 86218137 is 73181268.

It is not a de Polignac number, because 86218137 - 2² = 86218133 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (86218133) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 11178 + ... + 17244.

Almost surely, 2^86218137 is an apocalyptic number.

It is an amenable number.

86218137 is a deficient number, since it is larger than the sum of its proper divisors (38418583).

86218137 is a wasteful number, since it uses less digits than its factorization.

86218137 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7652 (or 7649 counting only the distinct ones).

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

The square root of 86218137 is about 9285.3722057869. The cubic root of 86218137 is about 441.7733818477.

The spelling of 86218137 in words is "eighty-six million, two hundred eighteen thousand, one hundred thirty-seven".