2213805 has 16 divisors (see below), whose sum is σ = 3864384. Its totient is φ = 1073280.

The previous prime is 2213789. The next prime is 2213833. The reversal of 2213805 is 5083122.

It is not a de Polignac number, because 2213805 - 2⁴ = 2213789 is a prime.

It is a Curzon number.

2213805 is a lucky number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6544 + ... + 6873.

It is an arithmetic number, because the mean of its divisors is an integer number (241524).

2^2213805 is an apocalyptic number.

It is an amenable number.

2213805 is a deficient number, since it is larger than the sum of its proper divisors (1650579).

2213805 is a wasteful number, since it uses less digits than its factorization.

2213805 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13436.

The product of its (nonzero) digits is 480, while the sum is 21.

The square root of 2213805 is about 1487.8860843492. The cubic root of 2213805 is about 130.3306180204.

Adding to 2213805 its reverse (5083122), we get a palindrome (7296927).

The spelling of 2213805 in words is "two million, two hundred thirteen thousand, eight hundred five".