868915 has 4 divisors (see below), whose sum is σ = 1042704. Its totient is φ = 695128.

The previous prime is 868909. The next prime is 868937. The reversal of 868915 is 519868.

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 868915 - 2⁵ = 868883 is a prime.

It is a Duffinian number.

It is a plaindrome in base 13.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 86887 + ... + 86896.

It is an arithmetic number, because the mean of its divisors is an integer number (260676).

2⁸⁶⁸⁹¹⁵ is an apocalyptic number.

868915 is a deficient number, since it is larger than the sum of its proper divisors (173789).

868915 is a wasteful number, since it uses less digits than its factorization.

868915 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 173788.

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

The square root of 868915 is about 932.1561028068. The cubic root of 868915 is about 95.4243253473.

The spelling of 868915 in words is "eight hundred sixty-eight thousand, nine hundred fifteen".