22666871 has 2 divisors, whose sum is σ = 22666872. Its totient is φ = 22666870.

The previous prime is 22666849. The next prime is 22666879. The reversal of 22666871 is 17866622.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 22666871 - 2¹⁰ = 22665847 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22666879) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11333435 + 11333436.

It is an arithmetic number, because the mean of its divisors is an integer number (11333436).

Almost surely, 2^22666871 is an apocalyptic number.

22666871 is a deficient number, since it is larger than the sum of its proper divisors (1).

22666871 is an equidigital number, since it uses as much as digits as its factorization.

22666871 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 48384, while the sum is 38.

The square root of 22666871 is about 4760.9737449392. The cubic root of 22666871 is about 283.0070086957.

The spelling of 22666871 in words is "twenty-two million, six hundred sixty-six thousand, eight hundred seventy-one".