22780859 has 2 divisors, whose sum is σ = 22780860. Its totient is φ = 22780858.

The previous prime is 22780843. The next prime is 22780873. The reversal of 22780859 is 95808722.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 22780859 - 2⁴ = 22780843 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (22780889) 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, 11390429 + 11390430.

It is an arithmetic number, because the mean of its divisors is an integer number (11390430).

Almost surely, 2^22780859 is an apocalyptic number.

22780859 is a deficient number, since it is larger than the sum of its proper divisors (1).

22780859 is an equidigital number, since it uses as much as digits as its factorization.

22780859 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 80640, while the sum is 41.

The square root of 22780859 is about 4772.9298130184. The cubic root of 22780859 is about 283.4806143928.

The spelling of 22780859 in words is "twenty-two million, seven hundred eighty thousand, eight hundred fifty-nine".