22004663 has 4 divisors (see below), whose sum is σ = 22014048. Its totient is φ = 21995280.

The previous prime is 22004639. The next prime is 22004683. The reversal of 22004663 is 36640022.

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 22004663 - 2¹⁴ = 21988279 is a prime.

It is a super-3 number, since 3×22004663³ (a number of 23 digits) contains 333 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 (22004683) 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, 2195 + ... + 6987.

It is an arithmetic number, because the mean of its divisors is an integer number (5503512).

Almost surely, 2^22004663 is an apocalyptic number.

22004663 is a deficient number, since it is larger than the sum of its proper divisors (9385).

22004663 is an equidigital number, since it uses as much as digits as its factorization.

22004663 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9384.

The product of its (nonzero) digits is 1728, while the sum is 23.

The square root of 22004663 is about 4690.9128109569. The cubic root of 22004663 is about 280.2237284994.

Adding to 22004663 its reverse (36640022), we get a palindrome (58644685).

The spelling of 22004663 in words is "twenty-two million, four thousand, six hundred sixty-three".