22135663 has 4 divisors (see below), whose sum is σ = 24148008. Its totient is φ = 20123320.

The previous prime is 22135651. The next prime is 22135693. The reversal of 22135663 is 36653122.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-22135663 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 (22135693) 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, 1006156 + ... + 1006177.

It is an arithmetic number, because the mean of its divisors is an integer number (6037002).

Almost surely, 2^22135663 is an apocalyptic number.

22135663 is a deficient number, since it is larger than the sum of its proper divisors (2012345).

22135663 is a wasteful number, since it uses less digits than its factorization.

22135663 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2012344.

The product of its digits is 6480, while the sum is 28.

The square root of 22135663 is about 4704.8552581349. The cubic root of 22135663 is about 280.7787124050.

Adding to 22135663 its reverse (36653122), we get a palindrome (58788785).

The spelling of 22135663 in words is "twenty-two million, one hundred thirty-five thousand, six hundred sixty-three".