22008663 has 12 divisors (see below), whose sum is σ = 31865808. Its totient is φ = 14637600.

The previous prime is 22008661. The next prime is 22008691. The reversal of 22008663 is 36680022.

It is not a de Polignac number, because 22008663 - 2¹ = 22008661 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22008661) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1438 + ... + 6788.

It is an arithmetic number, because the mean of its divisors is an integer number (2655484).

Almost surely, 2^22008663 is an apocalyptic number.

22008663 is a deficient number, since it is larger than the sum of its proper divisors (9857145).

22008663 is a wasteful number, since it uses less digits than its factorization.

22008663 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5814 (or 5811 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 27.

The square root of 22008663 is about 4691.3391478340. The cubic root of 22008663 is about 280.2407071281.

Adding to 22008663 its reverse (36680022), we get a palindrome (58688685).

The spelling of 22008663 in words is "twenty-two million, eight thousand, six hundred sixty-three".