330565 has 8 divisors (see below), whose sum is σ = 420120. Its totient is φ = 248832.

The previous prime is 330563. The next prime is 330569. The reversal of 330565 is 565033.

It can be written as a sum of positive squares in 4 ways, for example, as 101124 + 229441 = 318^2 + 479^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a 5-Lehmer number, since φ(330565) divides (330565-1)⁵.

It is a cyclic number.

It is not a de Polignac number, because 330565 - 2¹ = 330563 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (330563) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1860 + ... + 2029.

It is an arithmetic number, because the mean of its divisors is an integer number (52515).

2³³⁰⁵⁶⁵ is an apocalyptic number.

It is an amenable number.

330565 is a deficient number, since it is larger than the sum of its proper divisors (89555).

330565 is a wasteful number, since it uses less digits than its factorization.

330565 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3911.

The product of its (nonzero) digits is 1350, while the sum is 22.

The square root of 330565 is about 574.9478237197. The cubic root of 330565 is about 69.1436480878.

Adding to 330565 its reverse (565033), we get a palindrome (895598).

The spelling of 330565 in words is "three hundred thirty thousand, five hundred sixty-five".