320875 has 16 divisors (see below), whose sum is σ = 426816. Its totient is φ = 240000.

The previous prime is 320867. The next prime is 320899. The reversal of 320875 is 578023.

It is not a de Polignac number, because 320875 - 2³ = 320867 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (25).

It is a Duffinian number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 2050 + ... + 2200.

It is an arithmetic number, because the mean of its divisors is an integer number (26676).

2³²⁰⁸⁷⁵ is an apocalyptic number.

320875 is a deficient number, since it is larger than the sum of its proper divisors (105941).

320875 is a wasteful number, since it uses less digits than its factorization.

320875 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 183 (or 173 counting only the distinct ones).

The product of its (nonzero) digits is 1680, while the sum is 25.

The square root of 320875 is about 566.4582950227. The cubic root of 320875 is about 68.4613240034.

Adding to 320875 its reverse (578023), we get a palindrome (898898).

The spelling of 320875 in words is "three hundred twenty thousand, eight hundred seventy-five".