2205913 has 4 divisors (see below), whose sum is σ = 2247588. Its totient is φ = 2164240.

The previous prime is 2205911. The next prime is 2205947. The reversal of 2205913 is 3195022.

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 1261129 + 944784 = 1123^2 + 972^2 .

It is a cyclic number.

It is not a de Polignac number, because 2205913 - 2¹ = 2205911 is a prime.

It is a Smith number, since the sum of its digits (22) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2205911) 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, 20758 + ... + 20863.

It is an arithmetic number, because the mean of its divisors is an integer number (561897).

2^2205913 is an apocalyptic number.

It is an amenable number.

2205913 is a deficient number, since it is larger than the sum of its proper divisors (41675).

2205913 is an equidigital number, since it uses as much as digits as its factorization.

2205913 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41674.

The product of its (nonzero) digits is 540, while the sum is 22.

The square root of 2205913 is about 1485.2316317666. The cubic root of 2205913 is about 130.1755616184.

The spelling of 2205913 in words is "two million, two hundred five thousand, nine hundred thirteen".