86261 has 4 divisors (see below), whose sum is σ = 98592. Its totient is φ = 73932.

The previous prime is 86257. The next prime is 86263. The reversal of 86261 is 16268.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 86261 - 2² = 86257 is a prime.

It is a Duffinian number.

It is a zygodrome in base 4.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (86263) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6155 + ... + 6168.

It is an arithmetic number, because the mean of its divisors is an integer number (24648).

2⁸⁶²⁶¹ is an apocalyptic number.

It is an amenable number.

86261 is a deficient number, since it is larger than the sum of its proper divisors (12331).

86261 is a wasteful number, since it uses less digits than its factorization.

86261 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12330.

The product of its digits is 576, while the sum is 23.

The square root of 86261 is about 293.7022301584. The cubic root of 86261 is about 44.1846578339.

The spelling of 86261 in words is "eighty-six thousand, two hundred sixty-one".