22264609 has 4 divisors (see below), whose sum is σ = 22275604. Its totient is φ = 22253616.

The previous prime is 22264597. The next prime is 22264631. The reversal of 22264609 is 90646222.

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, and also an emirpimes, since its reverse is a distinct semiprime: 90646222 = 2 ⋅45323111.

It can be written as a sum of positive squares in 2 ways, for example, as 11189025 + 11075584 = 3345^2 + 3328^2 .

It is a cyclic number.

It is not a de Polignac number, because 22264609 - 2⁷ = 22264481 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22264009) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1482 + ... + 6835.

It is an arithmetic number, because the mean of its divisors is an integer number (5568901).

Almost surely, 2^22264609 is an apocalyptic number.

It is an amenable number.

22264609 is a deficient number, since it is larger than the sum of its proper divisors (10995).

22264609 is an equidigital number, since it uses as much as digits as its factorization.

22264609 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10994.

The product of its (nonzero) digits is 10368, while the sum is 31.

The square root of 22264609 is about 4718.5388628261. The cubic root of 22264609 is about 281.3228602015.

The spelling of 22264609 in words is "twenty-two million, two hundred sixty-four thousand, six hundred nine".