22366609 has 2 divisors, whose sum is σ = 22366610. Its totient is φ = 22366608.

The previous prime is 22366601. The next prime is 22366621. The reversal of 22366609 is 90666322.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 22278400 + 88209 = 4720^2 + 297^2 .

It is a cyclic number.

It is not a de Polignac number, because 22366609 - 2³ = 22366601 is a prime.

It is not a weakly prime, because it can be changed into another prime (22366601) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11183304 + 11183305.

It is an arithmetic number, because the mean of its divisors is an integer number (11183305).

Almost surely, 2^22366609 is an apocalyptic number.

It is an amenable number.

22366609 is a deficient number, since it is larger than the sum of its proper divisors (1).

22366609 is an equidigital number, since it uses as much as digits as its factorization.

22366609 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 23328, while the sum is 34.

The square root of 22366609 is about 4729.3349426743. The cubic root of 22366609 is about 281.7518103688.

The spelling of 22366609 in words is "twenty-two million, three hundred sixty-six thousand, six hundred nine".