2205965 has 4 divisors (see below), whose sum is σ = 2647164. Its totient is φ = 1764768.

The previous prime is 2205949. The next prime is 2205989. The reversal of 2205965 is 5695022.

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 426409 + 1779556 = 653^2 + 1334^2 .

It is a cyclic number.

It is not a de Polignac number, because 2205965 - 2⁴ = 2205949 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 220592 + ... + 220601.

It is an arithmetic number, because the mean of its divisors is an integer number (661791).

2^2205965 is an apocalyptic number.

It is an amenable number.

2205965 is a deficient number, since it is larger than the sum of its proper divisors (441199).

2205965 is an equidigital number, since it uses as much as digits as its factorization.

2205965 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 441198.

The product of its (nonzero) digits is 5400, while the sum is 29.

The square root of 2205965 is about 1485.2491373504. The cubic root of 2205965 is about 130.1765844868.

The spelling of 2205965 in words is "two million, two hundred five thousand, nine hundred sixty-five".