328565 has 4 divisors (see below), whose sum is σ = 394284. Its totient is φ = 262848.

The previous prime is 328543. The next prime is 328579. The reversal of 328565 is 565823.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 208849 + 119716 = 457^2 + 346^2 .

It is a cyclic number.

It is not a de Polignac number, because 328565 - 2¹² = 324469 is a prime.

It is a d-powerful number, because it can be written as 3⁷ + 2¹⁸ + 5⁶ + 8⁵ + 6³ + 5⁶ .

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 328565.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 32852 + ... + 32861.

It is an arithmetic number, because the mean of its divisors is an integer number (98571).

328565 is a Friedman number, since it can be written as 56+(8^2+5)^3, using all its digits and the basic arithmetic operations.

2³²⁸⁵⁶⁵ is an apocalyptic number.

It is an amenable number.

328565 is a deficient number, since it is larger than the sum of its proper divisors (65719).

328565 is an equidigital number, since it uses as much as digits as its factorization.

328565 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 65718.

The product of its digits is 7200, while the sum is 29.

The square root of 328565 is about 573.2058966898. The cubic root of 328565 is about 69.0039205222.

The spelling of 328565 in words is "three hundred twenty-eight thousand, five hundred sixty-five".