222557689 has 2 divisors, whose sum is σ = 222557690. Its totient is φ = 222557688.

The previous prime is 222557677. The next prime is 222557747. The reversal of 222557689 is 986755222.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 210482064 + 12075625 = 14508^2 + 3475^2 .

It is a cyclic number.

It is not a de Polignac number, because 222557689 - 2¹³ = 222549497 is a prime.

It is not a weakly prime, because it can be changed into another prime (222557609) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 111278844 + 111278845.

It is an arithmetic number, because the mean of its divisors is an integer number (111278845).

Almost surely, 2^222557689 is an apocalyptic number.

It is an amenable number.

222557689 is a deficient number, since it is larger than the sum of its proper divisors (1).

222557689 is an equidigital number, since it uses as much as digits as its factorization.

222557689 is an evil number, because the sum of its binary digits is even.

The product of its digits is 604800, while the sum is 46.

The square root of 222557689 is about 14918.3675045227. The cubic root of 222557689 is about 606.0115028297.

The spelling of 222557689 in words is "two hundred twenty-two million, five hundred fifty-seven thousand, six hundred eighty-nine".