266122973 has 2 divisors, whose sum is σ = 266122974. Its totient is φ = 266122972.

The previous prime is 266122951. The next prime is 266122991. The reversal of 266122973 is 379221662.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 252269689 + 13853284 = 15883^2 + 3722^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-266122973 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (266122933) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 133061486 + 133061487.

It is an arithmetic number, because the mean of its divisors is an integer number (133061487).

Almost surely, 2^266122973 is an apocalyptic number.

It is an amenable number.

266122973 is a deficient number, since it is larger than the sum of its proper divisors (1).

266122973 is an equidigital number, since it uses as much as digits as its factorization.

266122973 is an evil number, because the sum of its binary digits is even.

The product of its digits is 54432, while the sum is 38.

The square root of 266122973 is about 16313.2759738809. The cubic root of 266122973 is about 643.2218500538.

The spelling of 266122973 in words is "two hundred sixty-six million, one hundred twenty-two thousand, nine hundred seventy-three".