222266689 has 2 divisors, whose sum is σ = 222266690. Its totient is φ = 222266688.

The previous prime is 222266663. The next prime is 222266717. The reversal of 222266689 is 986662222.

222266689 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 222248464 + 18225 = 14908^2 + 135^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-222266689 is a prime.

It is a plaindrome in base 10.

It is not a weakly prime, because it can be changed into another prime (222266489) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 111133344 + 111133345.

It is an arithmetic number, because the mean of its divisors is an integer number (111133345).

Almost surely, 2^222266689 is an apocalyptic number.

It is an amenable number.

222266689 is a deficient number, since it is larger than the sum of its proper divisors (1).

222266689 is an equidigital number, since it uses as much as digits as its factorization.

222266689 is an evil number, because the sum of its binary digits is even.

The product of its digits is 248832, while the sum is 43.

The square root of 222266689 is about 14908.6112364633. The cubic root of 222266689 is about 605.7472623317.

The spelling of 222266689 in words is "two hundred twenty-two million, two hundred sixty-six thousand, six hundred eighty-nine".