864375 has 20 divisors (see below), whose sum is σ = 1443288. Its totient is φ = 460000.

The previous prime is 864361. The next prime is 864379. The reversal of 864375 is 573468.

It is not a de Polignac number, because 864375 - 2⁴ = 864359 is a prime.

It is a d-powerful number, because it can be written as 8⁵ + 6⁵ + 3³ + 4⁴ + 7⁷ + 5 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (864379) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 1645 + ... + 2105.

2⁸⁶⁴³⁷⁵ is an apocalyptic number.

864375 is a deficient number, since it is larger than the sum of its proper divisors (578913).

864375 is an equidigital number, since it uses as much as digits as its factorization.

864375 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 484 (or 469 counting only the distinct ones).

The product of its digits is 20160, while the sum is 33.

The square root of 864375 is about 929.7176990894. The cubic root of 864375 is about 95.2578406480.

The spelling of 864375 in words is "eight hundred sixty-four thousand, three hundred seventy-five".