3604565 has 4 divisors (see below), whose sum is σ = 4325484. Its totient is φ = 2883648.

The previous prime is 3604553. The next prime is 3604567. The reversal of 3604565 is 5654063.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 5654063 = 67 ⋅84389.

It can be written as a sum of positive squares in 2 ways, for example, as 485809 + 3118756 = 697^2 + 1766^2 .

It is a cyclic number.

It is not a de Polignac number, because 3604565 - 2⁸ = 3604309 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3604567) 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, 360452 + ... + 360461.

It is an arithmetic number, because the mean of its divisors is an integer number (1081371).

Almost surely, 2^3604565 is an apocalyptic number.

It is an amenable number.

3604565 is a deficient number, since it is larger than the sum of its proper divisors (720919).

3604565 is an equidigital number, since it uses as much as digits as its factorization.

3604565 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 720918.

The product of its (nonzero) digits is 10800, while the sum is 29.

The square root of 3604565 is about 1898.5691981068. The cubic root of 3604565 is about 153.3266406447.

The spelling of 3604565 in words is "three million, six hundred four thousand, five hundred sixty-five".