86645 has 16 divisors (see below), whose sum is σ = 118272. Its totient is φ = 60480.

The previous prime is 86629. The next prime is 86677. The reversal of 86645 is 54668.

It is not a de Polignac number, because 86645 - 2⁴ = 86629 is a prime.

It is a d-powerful number, because it can be written as 8³ + 6³ + 6⁵ + 4² + 5⁷ .

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1994 + ... + 2036.

It is an arithmetic number, because the mean of its divisors is an integer number (7392).

2⁸⁶⁶⁴⁵ is an apocalyptic number.

It is an amenable number.

86645 is a deficient number, since it is larger than the sum of its proper divisors (31627).

86645 is a wasteful number, since it uses less digits than its factorization.

86645 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 92.

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

The square root of 86645 is about 294.3552275738. The cubic root of 86645 is about 44.2501250169.

The spelling of 86645 in words is "eighty-six thousand, six hundred forty-five".