2213566 has 8 divisors (see below), whose sum is σ = 3464784. Its totient is φ = 1058640.

The previous prime is 2213551. The next prime is 2213591. The reversal of 2213566 is 6653122.

2213566 = 144² + 145² + ... + 212².

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

It is a self number, because there is not a number n which added to its sum of digits gives 2213566.

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, 24015 + ... + 24106.

It is an arithmetic number, because the mean of its divisors is an integer number (433098).

2^2213566 is an apocalyptic number.

2213566 is a deficient number, since it is larger than the sum of its proper divisors (1251218).

2213566 is a wasteful number, since it uses less digits than its factorization.

2213566 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48146.

The product of its digits is 2160, while the sum is 25.

The square root of 2213566 is about 1487.8057668930. The cubic root of 2213566 is about 130.3259277339.

Adding to 2213566 its reverse (6653122), we get a palindrome (8866688).

It can be divided in two parts, 22135 and 66, that added together give a square (22201 = 149²).

The spelling of 2213566 in words is "two million, two hundred thirteen thousand, five hundred sixty-six".