3564565 has 4 divisors (see below), whose sum is σ = 4277484. Its totient is φ = 2851648.

The previous prime is 3564557. The next prime is 3564569. The reversal of 3564565 is 5654653.

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 1127844 + 2436721 = 1062^2 + 1561^2 .

It is a cyclic number.

It is not a de Polignac number, because 3564565 - 2³ = 3564557 is a prime.

It is a super-2 number, since 2×3564565² = 25412247278450, which contains 22 as substring.

It is a Duffinian number.

3564565 is a lucky number.

It is a self number, because there is not a number n which added to its sum of digits gives 3564565.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3564569) 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, 356452 + ... + 356461.

It is an arithmetic number, because the mean of its divisors is an integer number (1069371).

Almost surely, 2^3564565 is an apocalyptic number.

It is an amenable number.

3564565 is a deficient number, since it is larger than the sum of its proper divisors (712919).

3564565 is an equidigital number, since it uses as much as digits as its factorization.

3564565 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 712918.

The product of its digits is 54000, while the sum is 34.

The square root of 3564565 is about 1888.0055614325. The cubic root of 3564565 is about 152.7573724324.

The spelling of 3564565 in words is "three million, five hundred sixty-four thousand, five hundred sixty-five".