86911 has 4 divisors (see below), whose sum is σ = 94824. Its totient is φ = 79000.

The previous prime is 86869. The next prime is 86923. The reversal of 86911 is 11968.

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

It is a cyclic number.

It is not a de Polignac number, because 86911 - 2⁷ = 86783 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (86951) 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, 3940 + ... + 3961.

It is an arithmetic number, because the mean of its divisors is an integer number (23706).

2⁸⁶⁹¹¹ is an apocalyptic number.

86911 is a deficient number, since it is larger than the sum of its proper divisors (7913).

86911 is a wasteful number, since it uses less digits than its factorization.

86911 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7912.

The product of its digits is 432, while the sum is 25.

The square root of 86911 is about 294.8067163414. The cubic root of 86911 is about 44.2953613590.

It can be divided in two parts, 869 and 11, that multiplied together give a palindrome (9559).

The spelling of 86911 in words is "eighty-six thousand, nine hundred eleven".