86881 has 4 divisors (see below), whose sum is σ = 87472. Its totient is φ = 86292.

The previous prime is 86869. The next prime is 86923. The reversal of 86881 is 18868.

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, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 86881 - 2⁷ = 86753 is a prime.

It is a super-2 number, since 2×86881² = 15096616322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (86851) 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, 130 + ... + 436.

It is an arithmetic number, because the mean of its divisors is an integer number (21868).

2⁸⁶⁸⁸¹ is an apocalyptic number.

It is an amenable number.

86881 is a deficient number, since it is larger than the sum of its proper divisors (591).

86881 is a wasteful number, since it uses less digits than its factorization.

86881 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 590.

The product of its digits is 3072, while the sum is 31.

The square root of 86881 is about 294.7558311552. The cubic root of 86881 is about 44.2902641379.

It can be divided in two parts, 868 and 81, that added together give a palindrome (949).

The spelling of 86881 in words is "eighty-six thousand, eight hundred eighty-one".