2190565 has 16 divisors (see below), whose sum is σ = 2878848. Its totient is φ = 1590336.

The previous prime is 2190541. The next prime is 2190577. The reversal of 2190565 is 5650912.

2190565 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 2190565 - 2⁵ = 2190533 is a prime.

It is a Duffinian number.

2190565 is a lucky number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4104 + ... + 4606.

It is an arithmetic number, because the mean of its divisors is an integer number (179928).

2^2190565 is an apocalyptic number.

It is an amenable number.

2190565 is a deficient number, since it is larger than the sum of its proper divisors (688283).

2190565 is a wasteful number, since it uses less digits than its factorization.

2190565 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 588.

The product of its (nonzero) digits is 2700, while the sum is 28.

The square root of 2190565 is about 1480.0557421935. The cubic root of 2190565 is about 129.8729528021.

The spelling of 2190565 in words is "two million, one hundred ninety thousand, five hundred sixty-five".