266076491 has 2 divisors, whose sum is σ = 266076492. Its totient is φ = 266076490.

The previous prime is 266076457. The next prime is 266076527. The reversal of 266076491 is 194670662.

266076491 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 266076491 - 2⁶ = 266076427 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (266076431) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 133038245 + 133038246.

It is an arithmetic number, because the mean of its divisors is an integer number (133038246).

Almost surely, 2^266076491 is an apocalyptic number.

266076491 is a deficient number, since it is larger than the sum of its proper divisors (1).

266076491 is an equidigital number, since it uses as much as digits as its factorization.

266076491 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 108864, while the sum is 41.

The square root of 266076491 is about 16311.8512438043. The cubic root of 266076491 is about 643.1843987224.

The spelling of 266076491 in words is "two hundred sixty-six million, seventy-six thousand, four hundred ninety-one".