266369 has 2 divisors, whose sum is σ = 266370. Its totient is φ = 266368.

The previous prime is 266359. The next prime is 266381. The reversal of 266369 is 963662.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 262144 + 4225 = 512^2 + 65^2 .

It is a cyclic number.

It is not a de Polignac number, because 266369 - 2⁴ = 266353 is a prime.

It is a super-2 number, since 2×266369² = 141904888322, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 266369.

It is not a weakly prime, because it can be changed into another prime (266359) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 133184 + 133185.

It is an arithmetic number, because the mean of its divisors is an integer number (133185).

2²⁶⁶³⁶⁹ is an apocalyptic number.

It is an amenable number.

266369 is a deficient number, since it is larger than the sum of its proper divisors (1).

266369 is an equidigital number, since it uses as much as digits as its factorization.

266369 is an evil number, because the sum of its binary digits is even.

The product of its digits is 11664, while the sum is 32.

The square root of 266369 is about 516.1094845089. The cubic root of 266369 is about 64.3420005564.

The spelling of 266369 in words is "two hundred sixty-six thousand, three hundred sixty-nine".