864085 has 8 divisors (see below), whose sum is σ = 1061280. Its totient is φ = 675024.

The previous prime is 864079. The next prime is 864091. The reversal of 864085 is 580468.

It is an interprime number because it is at equal distance from previous prime (864079) and next prime (864091).

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

It is a cyclic number.

It is not a de Polignac number, because 864085 - 2³ = 864077 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1795 + ... + 2224.

It is an arithmetic number, because the mean of its divisors is an integer number (132660).

2⁸⁶⁴⁰⁸⁵ is an apocalyptic number.

It is an amenable number.

864085 is a deficient number, since it is larger than the sum of its proper divisors (197195).

864085 is a wasteful number, since it uses less digits than its factorization.

864085 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4067.

The product of its (nonzero) digits is 7680, while the sum is 31.

The square root of 864085 is about 929.5617246853. The cubic root of 864085 is about 95.2471863742.

The spelling of 864085 in words is "eight hundred sixty-four thousand, eighty-five".