266938073 has 2 divisors, whose sum is σ = 266938074. Its totient is φ = 266938072.

The previous prime is 266938039. The next prime is 266938079. The reversal of 266938073 is 370839662.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 214563904 + 52374169 = 14648^2 + 7237^2 .

It is a cyclic number.

It is not a de Polignac number, because 266938073 - 2¹⁰ = 266937049 is a prime.

It is not a weakly prime, because it can be changed into another prime (266938079) 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, 133469036 + 133469037.

It is an arithmetic number, because the mean of its divisors is an integer number (133469037).

Almost surely, 2^266938073 is an apocalyptic number.

It is an amenable number.

266938073 is a deficient number, since it is larger than the sum of its proper divisors (1).

266938073 is an equidigital number, since it uses as much as digits as its factorization.

266938073 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 326592, while the sum is 44.

The square root of 266938073 is about 16338.2395930529. The cubic root of 266938073 is about 643.8778823078.

The spelling of 266938073 in words is "two hundred sixty-six million, nine hundred thirty-eight thousand, seventy-three".