22104065 has 4 divisors (see below), whose sum is σ = 26524884. Its totient is φ = 17683248.

The previous prime is 22104041. The next prime is 22104067. The reversal of 22104065 is 56040122.

It is a happy number.

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

It can be written as a sum of positive squares in 2 ways, for example, as 4092529 + 18011536 = 2023^2 + 4244^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-22104065 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22104067) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2210402 + ... + 2210411.

It is an arithmetic number, because the mean of its divisors is an integer number (6631221).

Almost surely, 2^22104065 is an apocalyptic number.

It is an amenable number.

22104065 is a deficient number, since it is larger than the sum of its proper divisors (4420819).

22104065 is an equidigital number, since it uses as much as digits as its factorization.

22104065 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4420818.

The product of its (nonzero) digits is 480, while the sum is 20.

The square root of 22104065 is about 4701.4960384967. The cubic root of 22104065 is about 280.6450476995.

Adding to 22104065 its reverse (56040122), we get a palindrome (78144187).

The spelling of 22104065 in words is "twenty-two million, one hundred four thousand, sixty-five".