22030609 has 4 divisors (see below), whose sum is σ = 22040100. Its totient is φ = 22021120.

The previous prime is 22030583. The next prime is 22030637. The reversal of 22030609 is 90603022.

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: 90603022 = 2 ⋅45301511.

It can be written as a sum of positive squares in 2 ways, for example, as 10660225 + 11370384 = 3265^2 + 3372^2 .

It is a cyclic number.

It is not a de Polignac number, because 22030609 - 2¹³ = 22022417 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 22030609.

It is not an unprimeable number, because it can be changed into a prime (22030649) 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, 1329 + ... + 6769.

It is an arithmetic number, because the mean of its divisors is an integer number (5510025).

Almost surely, 2^22030609 is an apocalyptic number.

It is an amenable number.

22030609 is a deficient number, since it is larger than the sum of its proper divisors (9491).

22030609 is an equidigital number, since it uses as much as digits as its factorization.

22030609 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9490.

The product of its (nonzero) digits is 648, while the sum is 22.

The square root of 22030609 is about 4693.6775560322. The cubic root of 22030609 is about 280.3338237866. Note that the first 3 decimals are identical.

The spelling of 22030609 in words is "twenty-two million, thirty thousand, six hundred nine".