86465 has 4 divisors (see below), whose sum is σ = 103764. Its totient is φ = 69168.

The previous prime is 86461. The next prime is 86467. The reversal of 86465 is 56468.

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

It can be written as a sum of positive squares in 2 ways, for example, as 14641 + 71824 = 121^2 + 268^2 .

It is a cyclic number.

It is not a de Polignac number, because 86465 - 2² = 86461 is a prime.

It is a d-powerful number, because it can be written as 8³ + 6² + 4² + 6⁵ + 5⁷ .

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (86461) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8642 + ... + 8651.

It is an arithmetic number, because the mean of its divisors is an integer number (25941).

2⁸⁶⁴⁶⁵ is an apocalyptic number.

It is an amenable number.

86465 is a deficient number, since it is larger than the sum of its proper divisors (17299).

86465 is a wasteful number, since it uses less digits than its factorization.

86465 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17298.

The product of its digits is 5760, while the sum is 29.

The square root of 86465 is about 294.0493155918. The cubic root of 86465 is about 44.2194614106.

Subtracting from 86465 its sum of digits (29), we obtain a square (86436 = 294²).

It can be divided in two parts, 864 and 65, that added together give a palindrome (929).

The spelling of 86465 in words is "eighty-six thousand, four hundred sixty-five".