266767 has 2 divisors, whose sum is σ = 266768. Its totient is φ = 266766.

The previous prime is 266759. The next prime is 266797. The reversal of 266767 is 767662.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 266767 - 2³ = 266759 is a prime.

266767 is a lucky number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (266797) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 133383 + 133384.

It is an arithmetic number, because the mean of its divisors is an integer number (133384).

2²⁶⁶⁷⁶⁷ is an apocalyptic number.

266767 is a deficient number, since it is larger than the sum of its proper divisors (1).

266767 is an equidigital number, since it uses as much as digits as its factorization.

266767 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 21168, while the sum is 34.

The square root of 266767 is about 516.4949176904. The cubic root of 266767 is about 64.3740305255.

The spelling of 266767 in words is "two hundred sixty-six thousand, seven hundred sixty-seven".