266956 has 6 divisors (see below), whose sum is σ = 467180. Its totient is φ = 133476.

The previous prime is 266953. The next prime is 266957. The reversal of 266956 is 659662.

It is not an unprimeable number, because it can be changed into a prime (266953) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33366 + ... + 33373.

2²⁶⁶⁹⁵⁶ is an apocalyptic number.

It is an amenable number.

266956 is a deficient number, since it is larger than the sum of its proper divisors (200224).

266956 is a wasteful number, since it uses less digits than its factorization.

266956 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 66743 (or 66741 counting only the distinct ones).

The product of its digits is 19440, while the sum is 34.

The square root of 266956 is about 516.6778493413. The cubic root of 266956 is about 64.3892295814.

The spelling of 266956 in words is "two hundred sixty-six thousand, nine hundred fifty-six".