868085 has 4 divisors (see below), whose sum is σ = 1041708. Its totient is φ = 694464.

The previous prime is 868081. The next prime is 868103. The reversal of 868085 is 580868.

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

It can be written as a sum of positive squares in 2 ways, for example, as 407044 + 461041 = 638^2 + 679^2 .

It is a cyclic number.

It is not a de Polignac number, because 868085 - 2² = 868081 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 868085.

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 3 ways as a sum of consecutive naturals, for example, 86804 + ... + 86813.

It is an arithmetic number, because the mean of its divisors is an integer number (260427).

2⁸⁶⁸⁰⁸⁵ is an apocalyptic number.

It is an amenable number.

868085 is a deficient number, since it is larger than the sum of its proper divisors (173623).

868085 is a wasteful number, since it uses less digits than its factorization.

868085 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 173622.

The product of its (nonzero) digits is 15360, while the sum is 35.

The square root of 868085 is about 931.7107920380. The cubic root of 868085 is about 95.3939321091.

The spelling of 868085 in words is "eight hundred sixty-eight thousand, eighty-five".