22243663 has 4 divisors (see below), whose sum is σ = 23954728. Its totient is φ = 20532600.

The previous prime is 22243657. The next prime is 22243673. The reversal of 22243663 is 36634222.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 36634222 = 2 ⋅18317111.

It is a cyclic number.

It is not a de Polignac number, because 22243663 - 2⁵ = 22243631 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22243673) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 855513 + ... + 855538.

It is an arithmetic number, because the mean of its divisors is an integer number (5988682).

Almost surely, 2^22243663 is an apocalyptic number.

22243663 is a deficient number, since it is larger than the sum of its proper divisors (1711065).

22243663 is a wasteful number, since it uses less digits than its factorization.

22243663 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1711064.

The product of its digits is 10368, while the sum is 28.

The square root of 22243663 is about 4716.3187975369. The cubic root of 22243663 is about 281.2346119647.

Adding to 22243663 its reverse (36634222), we get a palindrome (58877885).

The spelling of 22243663 in words is "twenty-two million, two hundred forty-three thousand, six hundred sixty-three".