86506015 has 4 divisors (see below), whose sum is σ = 103807224. Its totient is φ = 69204808.

The previous prime is 86505989. The next prime is 86506019. The reversal of 86506015 is 51060568.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 86506015 - 2⁵ = 86505983 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (86506019) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8650597 + ... + 8650606.

It is an arithmetic number, because the mean of its divisors is an integer number (25951806).

Almost surely, 2^86506015 is an apocalyptic number.

86506015 is a deficient number, since it is larger than the sum of its proper divisors (17301209).

86506015 is a wasteful number, since it uses less digits than its factorization.

86506015 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17301208.

The product of its (nonzero) digits is 7200, while the sum is 31.

The square root of 86506015 is about 9300.8609816511. The cubic root of 86506015 is about 442.2645219501.

The spelling of 86506015 in words is "eighty-six million, five hundred six thousand, fifteen".