22546609 has 4 divisors (see below), whose sum is σ = 22556160. Its totient is φ = 22537060.

The previous prime is 22546591. The next prime is 22546619. The reversal of 22546609 is 90664522.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 22546609 - 2⁷ = 22546481 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22546619) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1632 + ... + 6910.

It is an arithmetic number, because the mean of its divisors is an integer number (5639040).

Almost surely, 2^22546609 is an apocalyptic number.

It is an amenable number.

22546609 is a deficient number, since it is larger than the sum of its proper divisors (9551).

22546609 is an equidigital number, since it uses as much as digits as its factorization.

22546609 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9550.

The product of its (nonzero) digits is 25920, while the sum is 34.

The square root of 22546609 is about 4748.3269685227. The cubic root of 22546609 is about 282.5056108735.

The spelling of 22546609 in words is "twenty-two million, five hundred forty-six thousand, six hundred nine".