864345 has 16 divisors (see below), whose sum is σ = 1431360. Its totient is φ = 444864.

The previous prime is 864341. The next prime is 864359. The reversal of 864345 is 543468.

It is not a de Polignac number, because 864345 - 2² = 864341 is a prime.

It is an Ulam number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (864341) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 559 + ... + 1428.

It is an arithmetic number, because the mean of its divisors is an integer number (89460).

2⁸⁶⁴³⁴⁵ is an apocalyptic number.

It is an amenable number.

864345 is a deficient number, since it is larger than the sum of its proper divisors (567015).

864345 is a wasteful number, since it uses less digits than its factorization.

864345 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2024.

The product of its digits is 11520, while the sum is 30.

The square root of 864345 is about 929.7015650197. The cubic root of 864345 is about 95.2567385923.

The spelling of 864345 in words is "eight hundred sixty-four thousand, three hundred forty-five".