864575 has 6 divisors (see below), whose sum is σ = 1072104. Its totient is φ = 691640.

The previous prime is 864551. The next prime is 864581. The reversal of 864575 is 575468.

It is not a de Polignac number, because 864575 - 2⁶ = 864511 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 17267 + ... + 17316.

It is an arithmetic number, because the mean of its divisors is an integer number (178684).

2⁸⁶⁴⁵⁷⁵ is an apocalyptic number.

864575 is a deficient number, since it is larger than the sum of its proper divisors (207529).

864575 is a wasteful number, since it uses less digits than its factorization.

864575 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34593 (or 34588 counting only the distinct ones).

The product of its digits is 33600, while the sum is 35.

The square root of 864575 is about 929.8252523996. The cubic root of 864575 is about 95.2651870347.

The spelling of 864575 in words is "eight hundred sixty-four thousand, five hundred seventy-five".