22231663 has 4 divisors (see below), whose sum is σ = 22242600. Its totient is φ = 22220728.

The previous prime is 22231637. The next prime is 22231667. The reversal of 22231663 is 36613222.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 22231663 - 2⁹ = 22231151 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 (22231667) 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, 1420 + ... + 6817.

It is an arithmetic number, because the mean of its divisors is an integer number (5560650).

Almost surely, 2^22231663 is an apocalyptic number.

22231663 is a deficient number, since it is larger than the sum of its proper divisors (10937).

22231663 is an equidigital number, since it uses as much as digits as its factorization.

22231663 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10936.

The product of its digits is 2592, while the sum is 25.

The square root of 22231663 is about 4715.0464472792. The cubic root of 22231663 is about 281.1840294324.

Adding to 22231663 its reverse (36613222), we get a palindrome (58844885).

The spelling of 22231663 in words is "twenty-two million, two hundred thirty-one thousand, six hundred sixty-three".