266752961 has 2 divisors, whose sum is σ = 266752962. Its totient is φ = 266752960.

The previous prime is 266752957. The next prime is 266752973. The reversal of 266752961 is 169257662.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 265690000 + 1062961 = 16300^2 + 1031^2 .

It is a cyclic number.

It is not a de Polignac number, because 266752961 - 2² = 266752957 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (266752931) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 133376480 + 133376481.

It is an arithmetic number, because the mean of its divisors is an integer number (133376481).

Almost surely, 2^266752961 is an apocalyptic number.

It is an amenable number.

266752961 is a deficient number, since it is larger than the sum of its proper divisors (1).

266752961 is an equidigital number, since it uses as much as digits as its factorization.

266752961 is an evil number, because the sum of its binary digits is even.

The product of its digits is 272160, while the sum is 44.

The square root of 266752961 is about 16332.5736183861. The cubic root of 266752961 is about 643.7290124681.

The spelling of 266752961 in words is "two hundred sixty-six million, seven hundred fifty-two thousand, nine hundred sixty-one".