86321863 has 4 divisors (see below), whose sum is σ = 86342760. Its totient is φ = 86300968.

The previous prime is 86321857. The next prime is 86321867. The reversal of 86321863 is 36812368.

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 86321863 - 2¹³ = 86313671 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 (86321867) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1945 + ... + 13282.

It is an arithmetic number, because the mean of its divisors is an integer number (21585690).

Almost surely, 2^86321863 is an apocalyptic number.

86321863 is a deficient number, since it is larger than the sum of its proper divisors (20897).

86321863 is a wasteful number, since it uses less digits than its factorization.

86321863 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20896.

The product of its digits is 41472, while the sum is 37.

The square root of 86321863 is about 9290.9559788000. The cubic root of 86321863 is about 441.9504715085.

The spelling of 86321863 in words is "eighty-six million, three hundred twenty-one thousand, eight hundred sixty-three".