222635641 has 2 divisors, whose sum is σ = 222635642. Its totient is φ = 222635640.

The previous prime is 222635627. The next prime is 222635657. The reversal of 222635641 is 146536222.

222635641 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., 222606400 + 29241 = 14920^2 + 171^2 .

It is a cyclic number.

It is not a de Polignac number, because 222635641 - 2⁹ = 222635129 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (222635681) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 111317820 + 111317821.

It is an arithmetic number, because the mean of its divisors is an integer number (111317821).

Almost surely, 2^222635641 is an apocalyptic number.

It is an amenable number.

222635641 is a deficient number, since it is larger than the sum of its proper divisors (1).

222635641 is an equidigital number, since it uses as much as digits as its factorization.

222635641 is an evil number, because the sum of its binary digits is even.

The product of its digits is 17280, while the sum is 31.

The square root of 222635641 is about 14920.9798940954. The cubic root of 222635641 is about 606.0822474751.

The spelling of 222635641 in words is "two hundred twenty-two million, six hundred thirty-five thousand, six hundred forty-one".