3318565 has 4 divisors (see below), whose sum is σ = 3982284. Its totient is φ = 2654848.

The previous prime is 3318547. The next prime is 3318569. The reversal of 3318565 is 5658133.

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 492804 + 2825761 = 702^2 + 1681^2 .

It is a cyclic number.

It is not a de Polignac number, because 3318565 - 2⁵ = 3318533 is a prime.

It is a super-2 number, since 2×3318565² = 22025747318450, which contains 22 as substring.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3318569) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 331852 + ... + 331861.

It is an arithmetic number, because the mean of its divisors is an integer number (995571).

Almost surely, 2^3318565 is an apocalyptic number.

It is an amenable number.

3318565 is a deficient number, since it is larger than the sum of its proper divisors (663719).

3318565 is an equidigital number, since it uses as much as digits as its factorization.

3318565 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 663718.

The product of its digits is 10800, while the sum is 31.

The square root of 3318565 is about 1821.6928939863. The cubic root of 3318565 is about 149.1592220137.

It can be divided in two parts, 3318 and 565, that added together give a palindrome (3883).

The spelling of 3318565 in words is "three million, three hundred eighteen thousand, five hundred sixty-five".