22680209 has 2 divisors, whose sum is σ = 22680210. Its totient is φ = 22680208.

The previous prime is 22680199. The next prime is 22680211. The reversal of 22680209 is 90208622.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 18490000 + 4190209 = 4300^2 + 2047^2 .

It is a cyclic number.

It is not a de Polignac number, because 22680209 - 2¹⁶ = 22614673 is a prime.

Together with 22680211, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (22680289) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11340104 + 11340105.

It is an arithmetic number, because the mean of its divisors is an integer number (11340105).

Almost surely, 2^22680209 is an apocalyptic number.

It is an amenable number.

22680209 is a deficient number, since it is larger than the sum of its proper divisors (1).

22680209 is an equidigital number, since it uses as much as digits as its factorization.

22680209 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3456, while the sum is 29.

The square root of 22680209 is about 4762.3743028032. The cubic root of 22680209 is about 283.0625083031.

The spelling of 22680209 in words is "twenty-two million, six hundred eighty thousand, two hundred nine".