227540689 has 2 divisors, whose sum is σ = 227540690. Its totient is φ = 227540688.

The previous prime is 227540681. The next prime is 227540701. The reversal of 227540689 is 986045722.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 168558289 + 58982400 = 12983^2 + 7680^2 .

It is a cyclic number.

It is not a de Polignac number, because 227540689 - 2³ = 227540681 is a prime.

It is not a weakly prime, because it can be changed into another prime (227540681) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 113770344 + 113770345.

It is an arithmetic number, because the mean of its divisors is an integer number (113770345).

Almost surely, 2^227540689 is an apocalyptic number.

It is an amenable number.

227540689 is a deficient number, since it is larger than the sum of its proper divisors (1).

227540689 is an equidigital number, since it uses as much as digits as its factorization.

227540689 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 241920, while the sum is 43.

The square root of 227540689 is about 15084.4518959092. The cubic root of 227540689 is about 610.5009671260.

The spelling of 227540689 in words is "two hundred twenty-seven million, five hundred forty thousand, six hundred eighty-nine".