22008065 has 8 divisors (see below), whose sum is σ = 26441448. Its totient is φ = 17585280.

The previous prime is 22008043. The next prime is 22008067. The reversal of 22008065 is 56080022.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 13965169 + 8042896 = 3737^2 + 2836^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a de Polignac number, because none of the positive numbers 2^k-22008065 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 22008065.

It is not an unprimeable number, because it can be changed into a prime (22008067) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3035 + ... + 7295.

It is an arithmetic number, because the mean of its divisors is an integer number (3305181).

Almost surely, 2^22008065 is an apocalyptic number.

It is an amenable number.

22008065 is a deficient number, since it is larger than the sum of its proper divisors (4433383).

22008065 is a wasteful number, since it uses less digits than its factorization.

22008065 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5299.

The product of its (nonzero) digits is 960, while the sum is 23.

The square root of 22008065 is about 4691.2754129341. The cubic root of 22008065 is about 280.2381689539.

Adding to 22008065 its reverse (56080022), we get a palindrome (78088087).

The spelling of 22008065 in words is "twenty-two million, eight thousand, sixty-five".