266661113 has 2 divisors, whose sum is σ = 266661114. Its totient is φ = 266661112.

The previous prime is 266661097. The next prime is 266661173. The reversal of 266661113 is 311166662.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 238486249 + 28174864 = 15443^2 + 5308^2 .

It is a cyclic number.

It is not a de Polignac number, because 266661113 - 2⁴ = 266661097 is a prime.

It is a super-2 number, since 2×266661113² = 142216298372797538, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 266661113.

It is not a weakly prime, because it can be changed into another prime (266661173) 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, 133330556 + 133330557.

It is an arithmetic number, because the mean of its divisors is an integer number (133330557).

Almost surely, 2^266661113 is an apocalyptic number.

It is an amenable number.

266661113 is a deficient number, since it is larger than the sum of its proper divisors (1).

266661113 is an equidigital number, since it uses as much as digits as its factorization.

266661113 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 7776, while the sum is 32.

The square root of 266661113 is about 16329.7615720500. The cubic root of 266661113 is about 643.6551213676.

The spelling of 266661113 in words is "two hundred sixty-six million, six hundred sixty-one thousand, one hundred thirteen".