86863 has 4 divisors (see below), whose sum is σ = 99280. Its totient is φ = 74448.

The previous prime is 86861. The next prime is 86869. The reversal of 86863 is 36868.

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 86863 - 2¹ = 86861 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 (86861) 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, 6198 + ... + 6211.

It is an arithmetic number, because the mean of its divisors is an integer number (24820).

2⁸⁶⁸⁶³ is an apocalyptic number.

86863 is a deficient number, since it is larger than the sum of its proper divisors (12417).

86863 is a wasteful number, since it uses less digits than its factorization.

86863 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12416.

The product of its digits is 6912, while the sum is 31.

The square root of 86863 is about 294.7252958265. The cubic root of 86863 is about 44.2872052419.

It can be divided in two parts, 86 and 863, that added together give a palindrome (949).

The spelling of 86863 in words is "eighty-six thousand, eight hundred sixty-three".