86321864 has 32 divisors (see below), whose sum is σ = 176256000. Its totient is φ = 39477312.

The previous prime is 86321857. The next prime is 86321867. The reversal of 86321864 is 46812368.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (38).

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 (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5384 + ... + 14199.

It is an arithmetic number, because the mean of its divisors is an integer number (5508000).

Almost surely, 2^86321864 is an apocalyptic number.

It is an amenable number.

86321864 is an abundant number, since it is smaller than the sum of its proper divisors (89934136).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

86321864 is a wasteful number, since it uses less digits than its factorization.

86321864 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19637 (or 19633 counting only the distinct ones).

The product of its digits is 55296, while the sum is 38.

The square root of 86321864 is about 9290.9560326158. The cubic root of 86321864 is about 441.9504732151.

The spelling of 86321864 in words is "eighty-six million, three hundred twenty-one thousand, eight hundred sixty-four".