266957 has 2 divisors, whose sum is σ = 266958. Its totient is φ = 266956.

The previous prime is 266953. The next prime is 266971. The reversal of 266957 is 759662.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 249001 + 17956 = 499^2 + 134^2 .

It is a cyclic number.

It is not a de Polignac number, because 266957 - 2² = 266953 is a prime.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 266957.

It is not a weakly prime, because it can be changed into another prime (266953) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 133478 + 133479.

It is an arithmetic number, because the mean of its divisors is an integer number (133479).

2²⁶⁶⁹⁵⁷ is an apocalyptic number.

It is an amenable number.

266957 is a deficient number, since it is larger than the sum of its proper divisors (1).

266957 is an equidigital number, since it uses as much as digits as its factorization.

266957 is an evil number, because the sum of its binary digits is even.

The product of its digits is 22680, while the sum is 35.

The square root of 266957 is about 516.6788170614. The cubic root of 266957 is about 64.3893099806.

The spelling of 266957 in words is "two hundred sixty-six thousand, nine hundred fifty-seven".