86512065 has 16 divisors (see below), whose sum is σ = 146562048. Its totient is φ = 43425536.

The previous prime is 86512061. The next prime is 86512067. The reversal of 86512065 is 56021568.

It is a cyclic number.

It is not a de Polignac number, because 86512065 - 2² = 86512061 is a prime.

It is not an unprimeable number, because it can be changed into a prime (86512061) 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, 169377 + ... + 169886.

It is an arithmetic number, because the mean of its divisors is an integer number (9160128).

Almost surely, 2^86512065 is an apocalyptic number.

86512065 is a gapful number since it is divisible by the number (85) formed by its first and last digit.

It is an amenable number.

86512065 is a deficient number, since it is larger than the sum of its proper divisors (60049983).

86512065 is a wasteful number, since it uses less digits than its factorization.

86512065 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 339288.

The product of its (nonzero) digits is 14400, while the sum is 33.

The square root of 86512065 is about 9301.1862146718. The cubic root of 86512065 is about 442.2748319769.

The spelling of 86512065 in words is "eighty-six million, five hundred twelve thousand, sixty-five".