222765689 has 2 divisors, whose sum is σ = 222765690. Its totient is φ = 222765688.

The previous prime is 222765667. The next prime is 222765737. The reversal of 222765689 is 986567222.

222765689 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., 130759225 + 92006464 = 11435^2 + 9592^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-222765689 is a prime.

It is a super-3 number, since 3×222765689³ (a number of 26 digits) contains 333 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (222765629) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 111382844 + 111382845.

It is an arithmetic number, because the mean of its divisors is an integer number (111382845).

Almost surely, 2^222765689 is an apocalyptic number.

It is an amenable number.

222765689 is a deficient number, since it is larger than the sum of its proper divisors (1).

222765689 is an equidigital number, since it uses as much as digits as its factorization.

222765689 is an evil number, because the sum of its binary digits is even.

The product of its digits is 725760, while the sum is 47.

The square root of 222765689 is about 14925.3371486208. The cubic root of 222765689 is about 606.2002346368.

The spelling of 222765689 in words is "two hundred twenty-two million, seven hundred sixty-five thousand, six hundred eighty-nine".