22016663 has 4 divisors (see below), whose sum is σ = 22282008. Its totient is φ = 21751320.

The previous prime is 22016653. The next prime is 22016693. The reversal of 22016663 is 36661022.

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

It is a cyclic number.

It is not a de Polignac number, because 22016663 - 2⁴ = 22016647 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 (22016653) 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, 132548 + ... + 132713.

It is an arithmetic number, because the mean of its divisors is an integer number (5570502).

Almost surely, 2^22016663 is an apocalyptic number.

22016663 is a deficient number, since it is larger than the sum of its proper divisors (265345).

22016663 is an equidigital number, since it uses as much as digits as its factorization.

22016663 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 265344.

The product of its (nonzero) digits is 2592, while the sum is 26.

The square root of 22016663 is about 4692.1917053761. The cubic root of 22016663 is about 280.2746582147.

Adding to 22016663 its reverse (36661022), we get a palindrome (58677685).

The spelling of 22016663 in words is "twenty-two million, sixteen thousand, six hundred sixty-three".