227938661 has 2 divisors, whose sum is σ = 227938662. Its totient is φ = 227938660.

The previous prime is 227938609. The next prime is 227938699. The reversal of 227938661 is 166839722.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 132388036 + 95550625 = 11506^2 + 9775^2 .

It is a cyclic number.

It is not a de Polignac number, because 227938661 - 2²⁶ = 160829797 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (227938961) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 113969330 + 113969331.

It is an arithmetic number, because the mean of its divisors is an integer number (113969331).

Almost surely, 2^227938661 is an apocalyptic number.

It is an amenable number.

227938661 is a deficient number, since it is larger than the sum of its proper divisors (1).

227938661 is an equidigital number, since it uses as much as digits as its factorization.

227938661 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 217728, while the sum is 44.

The square root of 227938661 is about 15097.6375966573. The cubic root of 227938661 is about 610.8566848678.

The spelling of 227938661 in words is "two hundred twenty-seven million, nine hundred thirty-eight thousand, six hundred sixty-one".