22066613 has 2 divisors, whose sum is σ = 22066614. Its totient is φ = 22066612.

The previous prime is 22066573. The next prime is 22066621. The reversal of 22066613 is 31666022.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 18464209 + 3602404 = 4297^2 + 1898^2 .

It is a cyclic number.

It is not a de Polignac number, because 22066613 - 2¹⁴ = 22050229 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22066643) 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 as a sum of consecutive naturals, namely, 11033306 + 11033307.

It is an arithmetic number, because the mean of its divisors is an integer number (11033307).

Almost surely, 2^22066613 is an apocalyptic number.

It is an amenable number.

22066613 is a deficient number, since it is larger than the sum of its proper divisors (1).

22066613 is an equidigital number, since it uses as much as digits as its factorization.

22066613 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2592, while the sum is 26.

The square root of 22066613 is about 4697.5113624131. The cubic root of 22066613 is about 280.4864545448.

The spelling of 22066613 in words is "twenty-two million, sixty-six thousand, six hundred thirteen".