86215636 has 36 divisors (see below), whose sum is σ = 172633468. Its totient is φ = 37444608.

The previous prime is 86215627. The next prime is 86215639. The reversal of 86215636 is 63651268.

It can be written as a sum of positive squares in 6 ways, for example, as 5107600 + 81108036 = 2260^2 + 9006^2 .

It is a junction number, because it is equal to n+sod(n) for n = 86215595 and 86215604.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (86215639) 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, 12160 + ... + 17896.

Almost surely, 2^86215636 is an apocalyptic number.

It is an amenable number.

86215636 is an abundant number, since it is smaller than the sum of its proper divisors (86417832).

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

86215636 is a wasteful number, since it uses less digits than its factorization.

86215636 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5788 (or 5769 counting only the distinct ones).

The product of its digits is 51840, while the sum is 37.

The square root of 86215636 is about 9285.2375306182. The cubic root of 86215636 is about 441.7691101791.

The spelling of 86215636 in words is "eighty-six million, two hundred fifteen thousand, six hundred thirty-six".