227366861 has 2 divisors, whose sum is σ = 227366862. Its totient is φ = 227366860.

The previous prime is 227366849. The next prime is 227366899. The reversal of 227366861 is 168663722.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 204661636 + 22705225 = 14306^2 + 4765^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-227366861 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (227369861) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 113683430 + 113683431.

It is an arithmetic number, because the mean of its divisors is an integer number (113683431).

Almost surely, 2^227366861 is an apocalyptic number.

It is an amenable number.

227366861 is a deficient number, since it is larger than the sum of its proper divisors (1).

227366861 is an equidigital number, since it uses as much as digits as its factorization.

227366861 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 145152, while the sum is 41.

The square root of 227366861 is about 15078.6889682094. The cubic root of 227366861 is about 610.3454649785.

The spelling of 227366861 in words is "two hundred twenty-seven million, three hundred sixty-six thousand, eight hundred sixty-one".