864258 has 16 divisors (see below), whose sum is σ = 1788480. Its totient is φ = 278096.

The previous prime is 864251. The next prime is 864277. The reversal of 864258 is 852468.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 864258.

It is not an unprimeable number, because it can be changed into a prime (864251) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2310 + ... + 2657.

It is an arithmetic number, because the mean of its divisors is an integer number (111780).

2⁸⁶⁴²⁵⁸ is an apocalyptic number.

864258 is an abundant number, since it is smaller than the sum of its proper divisors (924222).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

864258 is a wasteful number, since it uses less digits than its factorization.

864258 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5001.

The product of its digits is 15360, while the sum is 33.

The square root of 864258 is about 929.6547746341. The cubic root of 864258 is about 95.2535424864.

The spelling of 864258 in words is "eight hundred sixty-four thousand, two hundred fifty-eight".