864158 has 8 divisors (see below), whose sum is σ = 1364520. Its totient is φ = 409320.

The previous prime is 864151. The next prime is 864167. The reversal of 864158 is 851468.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (864151) 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, 11333 + ... + 11408.

It is an arithmetic number, because the mean of its divisors is an integer number (170565).

2⁸⁶⁴¹⁵⁸ is an apocalyptic number.

864158 is a deficient number, since it is larger than the sum of its proper divisors (500362).

864158 is a wasteful number, since it uses less digits than its factorization.

864158 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22762.

The product of its digits is 7680, while the sum is 32.

The square root of 864158 is about 929.6009896725. The cubic root of 864158 is about 95.2498685366.

The spelling of 864158 in words is "eight hundred sixty-four thousand, one hundred fifty-eight".