2213806 has 8 divisors (see below), whose sum is σ = 3795120. Its totient is φ = 948768.

The previous prime is 2213789. The next prime is 2213833. The reversal of 2213806 is 6083122.

It is a sphenic number, since it is the product of 3 distinct primes.

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, 79051 + ... + 79078.

It is an arithmetic number, because the mean of its divisors is an integer number (474390).

2^2213806 is an apocalyptic number.

2213806 is a deficient number, since it is larger than the sum of its proper divisors (1581314).

2213806 is a wasteful number, since it uses less digits than its factorization.

2213806 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 158138.

The product of its (nonzero) digits is 576, while the sum is 22.

The square root of 2213806 is about 1487.8864203964. The cubic root of 2213806 is about 130.3306376443.

Adding to 2213806 its reverse (6083122), we get a palindrome (8296928).

The spelling of 2213806 in words is "two million, two hundred thirteen thousand, eight hundred six".