868159 has 4 divisors (see below), whose sum is σ = 871416. Its totient is φ = 864904.

The previous prime is 868157. The next prime is 868171. The reversal of 868159 is 951868.

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 868159 - 2¹ = 868157 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 (868151) 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, 1189 + ... + 1774.

It is an arithmetic number, because the mean of its divisors is an integer number (217854).

2⁸⁶⁸¹⁵⁹ is an apocalyptic number.

868159 is a deficient number, since it is larger than the sum of its proper divisors (3257).

868159 is a wasteful number, since it uses less digits than its factorization.

868159 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3256.

The product of its digits is 17280, while the sum is 37.

The square root of 868159 is about 931.7505030855. The cubic root of 868159 is about 95.3966426541.

The spelling of 868159 in words is "eight hundred sixty-eight thousand, one hundred fifty-nine".