86237865 has 80 divisors (see below), whose sum is σ = 186088320. Its totient is φ = 37324800.

The previous prime is 86237863. The next prime is 86237867. The reversal of 86237865 is 56873268.

It is an interprime number because it is at equal distance from previous prime (86237863) and next prime (86237867).

It is not a de Polignac number, because 86237865 - 2¹ = 86237863 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 86237865.

It is not an unprimeable number, because it can be changed into a prime (86237863) 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 79 ways as a sum of consecutive naturals, for example, 53065 + ... + 54665.

It is an arithmetic number, because the mean of its divisors is an integer number (2326104).

Almost surely, 2^86237865 is an apocalyptic number.

It is an amenable number.

86237865 is an abundant number, since it is smaller than the sum of its proper divisors (99850455).

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

86237865 is a wasteful number, since it uses less digits than its factorization.

86237865 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1644 (or 1635 counting only the distinct ones).

The product of its digits is 483840, while the sum is 45.

The square root of 86237865 is about 9286.4344610835. The cubic root of 86237865 is about 441.8070740650.

The spelling of 86237865 in words is "eighty-six million, two hundred thirty-seven thousand, eight hundred sixty-five".