22645859 has 2 divisors, whose sum is σ = 22645860. Its totient is φ = 22645858.

The previous prime is 22645829. The next prime is 22645877. The reversal of 22645859 is 95854622.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 22645859 - 2¹² = 22641763 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (22645829) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11322929 + 11322930.

It is an arithmetic number, because the mean of its divisors is an integer number (11322930).

Almost surely, 2^22645859 is an apocalyptic number.

22645859 is a deficient number, since it is larger than the sum of its proper divisors (1).

22645859 is an equidigital number, since it uses as much as digits as its factorization.

22645859 is an evil number, because the sum of its binary digits is even.

The product of its digits is 172800, while the sum is 41.

The square root of 22645859 is about 4758.7665418678. The cubic root of 22645859 is about 282.9195332831.

The spelling of 22645859 in words is "twenty-two million, six hundred forty-five thousand, eight hundred fifty-nine".