864086 has 4 divisors (see below), whose sum is σ = 1296132. Its totient is φ = 432042.

The previous prime is 864079. The next prime is 864091. The reversal of 864086 is 680468.

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

It is an Ulam number.

It is a congruent number.

It is an unprimeable number.

864086 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 216020 + ... + 216023.

It is an arithmetic number, because the mean of its divisors is an integer number (324033).

2⁸⁶⁴⁰⁸⁶ is an apocalyptic number.

864086 is a deficient number, since it is larger than the sum of its proper divisors (432046).

864086 is a wasteful number, since it uses less digits than its factorization.

864086 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 432045.

The product of its (nonzero) digits is 9216, while the sum is 32.

The square root of 864086 is about 929.5622625731. The cubic root of 864086 is about 95.2472231172.

The spelling of 864086 in words is "eight hundred sixty-four thousand, eighty-six".