2645565 has 16 divisors (see below), whose sum is σ = 4558848. Its totient is φ = 1302336.

The previous prime is 2645561. The next prime is 2645567. The reversal of 2645565 is 5655462.

It is a happy number.

It is not a de Polignac number, because 2645565 - 2² = 2645561 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2645561) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6589 + ... + 6978.

It is an arithmetic number, because the mean of its divisors is an integer number (284928).

2^2645565 is an apocalyptic number.

It is an amenable number.

2645565 is a deficient number, since it is larger than the sum of its proper divisors (1913283).

2645565 is a wasteful number, since it uses less digits than its factorization.

2645565 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13588.

The product of its digits is 36000, while the sum is 33.

The square root of 2645565 is about 1626.5192897719. The cubic root of 2645565 is about 138.3055088309.

The spelling of 2645565 in words is "two million, six hundred forty-five thousand, five hundred sixty-five".