266226823 has 2 divisors, whose sum is σ = 266226824. Its totient is φ = 266226822.

The previous prime is 266226811. The next prime is 266226833. The reversal of 266226823 is 328622662.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 266226823 - 2¹⁷ = 266095751 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (266226833) 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, 133113411 + 133113412.

It is an arithmetic number, because the mean of its divisors is an integer number (133113412).

Almost surely, 2^266226823 is an apocalyptic number.

266226823 is a deficient number, since it is larger than the sum of its proper divisors (1).

266226823 is an equidigital number, since it uses as much as digits as its factorization.

266226823 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 82944, while the sum is 37.

The square root of 266226823 is about 16316.4586537643. The cubic root of 266226823 is about 643.3055079974.

The spelling of 266226823 in words is "two hundred sixty-six million, two hundred twenty-six thousand, eight hundred twenty-three".