22045663 has 4 divisors (see below), whose sum is σ = 22055440. Its totient is φ = 22035888.

The previous prime is 22045657. The next prime is 22045687. The reversal of 22045663 is 36654022.

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 22045663 - 2⁵ = 22045631 is a prime.

It is a super-2 number, since 2×22045663² = 972022514219138, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22045603) 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, 406 + ... + 6652.

It is an arithmetic number, because the mean of its divisors is an integer number (5513860).

Almost surely, 2^22045663 is an apocalyptic number.

22045663 is a deficient number, since it is larger than the sum of its proper divisors (9777).

22045663 is an equidigital number, since it uses as much as digits as its factorization.

22045663 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9776.

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

The square root of 22045663 is about 4695.2809287624. The cubic root of 22045663 is about 280.3976620053.

Adding to 22045663 its reverse (36654022), we get a palindrome (58699685).

The spelling of 22045663 in words is "twenty-two million, forty-five thousand, six hundred sixty-three".