11223656 has 8 divisors (see below), whose sum is σ = 21044370. Its totient is φ = 5611824.

The previous prime is 11223649. The next prime is 11223659. The reversal of 11223656 is 65632211.

It can be written as a sum of positive squares in only one way, i.e., 11222500 + 1156 = 3350^2 + 34^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is not an unprimeable number, because it can be changed into a prime (11223659) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 701471 + ... + 701486.

Almost surely, 2^11223656 is an apocalyptic number.

It is an amenable number.

11223656 is a deficient number, since it is larger than the sum of its proper divisors (9820714).

11223656 is a wasteful number, since it uses less digits than its factorization.

11223656 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1402963 (or 1402959 counting only the distinct ones).

The product of its digits is 2160, while the sum is 26.

The square root of 11223656 is about 3350.1725328705. The cubic root of 11223656 is about 223.8951997004.

Adding to 11223656 its reverse (65632211), we get a palindrome (76855867).

The spelling of 11223656 in words is "eleven million, two hundred twenty-three thousand, six hundred fifty-six".