266772167 has 2 divisors, whose sum is σ = 266772168. Its totient is φ = 266772166.

The previous prime is 266772119. The next prime is 266772169. The reversal of 266772167 is 761277662.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-266772167 is a prime.

Together with 266772169, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (266772169) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 133386083 + 133386084.

It is an arithmetic number, because the mean of its divisors is an integer number (133386084).

Almost surely, 2^266772167 is an apocalyptic number.

266772167 is a deficient number, since it is larger than the sum of its proper divisors (1).

266772167 is an equidigital number, since it uses as much as digits as its factorization.

266772167 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 296352, while the sum is 44.

The square root of 266772167 is about 16333.1615739268. The cubic root of 266772167 is about 643.7444614222.

The spelling of 266772167 in words is "two hundred sixty-six million, seven hundred seventy-two thousand, one hundred sixty-seven".