86865015 has 16 divisors (see below), whose sum is σ = 139908096. Its totient is φ = 46020000.

The previous prime is 86865013. The next prime is 86865029. The reversal of 86865015 is 51056868.

It is not a de Polignac number, because 86865015 - 2¹ = 86865013 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (86865013) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 16911 + ... + 21440.

It is an arithmetic number, because the mean of its divisors is an integer number (8744256).

Almost surely, 2^86865015 is an apocalyptic number.

86865015 is a deficient number, since it is larger than the sum of its proper divisors (53043081).

86865015 is a wasteful number, since it uses less digits than its factorization.

86865015 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38510.

The product of its (nonzero) digits is 57600, while the sum is 39.

The square root of 86865015 is about 9320.1402886437. The cubic root of 86865015 is about 442.8754768932.

The spelling of 86865015 in words is "eighty-six million, eight hundred sixty-five thousand, fifteen".