22022609 has 6 divisors (see below), whose sum is σ = 25618194. Its totient is φ = 18876480.

The previous prime is 22022603. The next prime is 22022641. The reversal of 22022609 is 90622022.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 14025025 + 7997584 = 3745^2 + 2828^2 .

It is not a de Polignac number, because 22022609 - 2⁸ = 22022353 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (22022603) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 224672 + ... + 224769.

It is an arithmetic number, because the mean of its divisors is an integer number (4269699).

Almost surely, 2^22022609 is an apocalyptic number.

It is an amenable number.

22022609 is a deficient number, since it is larger than the sum of its proper divisors (3595585).

22022609 is an equidigital number, since it uses as much as digits as its factorization.

22022609 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 449455 (or 449448 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 23.

The square root of 22022609 is about 4692.8252684284. The cubic root of 22022609 is about 280.2998870321.

The spelling of 22022609 in words is "twenty-two million, twenty-two thousand, six hundred nine".