320265 has 24 divisors (see below), whose sum is σ = 606528. Its totient is φ = 155040.

The previous prime is 320239. The next prime is 320267. The reversal of 320265 is 562023.

It is not a de Polignac number, because 320265 - 2⁸ = 320009 is a prime.

It is a Curzon number.

320265 is a lucky number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 320265.

It is not an unprimeable number, because it can be changed into a prime (320267) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 172 + ... + 818.

It is an arithmetic number, because the mean of its divisors is an integer number (25272).

2³²⁰²⁶⁵ is an apocalyptic number.

It is an amenable number.

320265 is a deficient number, since it is larger than the sum of its proper divisors (286263).

320265 is a wasteful number, since it uses less digits than its factorization.

320265 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 669 (or 666 counting only the distinct ones).

The product of its (nonzero) digits is 360, while the sum is 18.

The square root of 320265 is about 565.9196055978. The cubic root of 320265 is about 68.4179136419.

Adding to 320265 its reverse (562023), we get a palindrome (882288).

It can be divided in two parts, 320 and 265, that added together give a palindrome (585).

The spelling of 320265 in words is "three hundred twenty thousand, two hundred sixty-five".