868089 has 12 divisors (see below), whose sum is σ = 1212176. Its totient is φ = 552552.

The previous prime is 868081. The next prime is 868103. The reversal of 868089 is 980868.

868089 is an esthetic number in base 11, because in such base its adjacent digits differ by 1.

It is not a de Polignac number, because 868089 - 2³ = 868081 is a prime.

It is a Duffinian number.

It is a Curzon number.

868089 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (868081) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1314 + ... + 1860.

2⁸⁶⁸⁰⁸⁹ is an apocalyptic number.

It is an amenable number.

868089 is a deficient number, since it is larger than the sum of its proper divisors (344087).

868089 is a wasteful number, since it uses less digits than its factorization.

868089 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 596 (or 573 counting only the distinct ones).

The product of its (nonzero) digits is 27648, while the sum is 39.

The square root of 868089 is about 931.7129386243. The cubic root of 868089 is about 95.3940786290.

The spelling of 868089 in words is "eight hundred sixty-eight thousand, eighty-nine".