266532863 has 2 divisors, whose sum is σ = 266532864. Its totient is φ = 266532862.

The previous prime is 266532821. The next prime is 266532883. The reversal of 266532863 is 368235662.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 266532863 - 2²⁴ = 249755647 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 266532863.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (266532803) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 133266431 + 133266432.

It is an arithmetic number, because the mean of its divisors is an integer number (133266432).

Almost surely, 2^266532863 is an apocalyptic number.

266532863 is a deficient number, since it is larger than the sum of its proper divisors (1).

266532863 is an equidigital number, since it uses as much as digits as its factorization.

266532863 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 311040, while the sum is 41.

The square root of 266532863 is about 16325.8342206455. The cubic root of 266532863 is about 643.5519167098.

The spelling of 266532863 in words is "two hundred sixty-six million, five hundred thirty-two thousand, eight hundred sixty-three".