22223566 has 16 divisors (see below), whose sum is σ = 34992000. Its totient is φ = 10565368.

The previous prime is 22223557. The next prime is 22223611. The reversal of 22223566 is 66532222.

It is a plaindrome in base 10.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6885 + ... + 9583.

It is an arithmetic number, because the mean of its divisors is an integer number (2187000).

Almost surely, 2^22223566 is an apocalyptic number.

22223566 is a deficient number, since it is larger than the sum of its proper divisors (12768434).

22223566 is a wasteful number, since it uses less digits than its factorization.

22223566 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2903.

The product of its digits is 8640, while the sum is 28.

The square root of 22223566 is about 4714.1877349126. The cubic root of 22223566 is about 281.1498885834.

Adding to 22223566 its reverse (66532222), we get a palindrome (88755788).

The spelling of 22223566 in words is "twenty-two million, two hundred twenty-three thousand, five hundred sixty-six".