864344 has 16 divisors (see below), whose sum is σ = 1745520. Its totient is φ = 398880.

The previous prime is 864341. The next prime is 864359. The reversal of 864344 is 443468.

It is a congruent 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 3 ways as a sum of consecutive naturals, for example, 4052 + ... + 4259.

It is an arithmetic number, because the mean of its divisors is an integer number (109095).

2⁸⁶⁴³⁴⁴ is an apocalyptic number.

It is an amenable number.

864344 is an abundant number, since it is smaller than the sum of its proper divisors (881176).

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

864344 is a wasteful number, since it uses less digits than its factorization.

864344 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8330 (or 8326 counting only the distinct ones).

The product of its digits is 9216, while the sum is 29.

The square root of 864344 is about 929.7010272125. The cubic root of 864344 is about 95.2567018567.

The spelling of 864344 in words is "eight hundred sixty-four thousand, three hundred forty-four".