266949 has 8 divisors (see below), whose sum is σ = 395520. Its totient is φ = 177948.

The previous prime is 266947. The next prime is 266953. The reversal of 266949 is 949662.

It is not a de Polignac number, because 266949 - 2¹ = 266947 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (266947) 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 in 7 ways as a sum of consecutive naturals, for example, 4917 + ... + 4970.

It is an arithmetic number, because the mean of its divisors is an integer number (49440).

2²⁶⁶⁹⁴⁹ is an apocalyptic number.

It is an amenable number.

266949 is a deficient number, since it is larger than the sum of its proper divisors (128571).

266949 is an equidigital number, since it uses as much as digits as its factorization.

266949 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9896 (or 9890 counting only the distinct ones).

The product of its digits is 23328, while the sum is 36.

The square root of 266949 is about 516.6710752500. The cubic root of 266949 is about 64.3886667813.

The spelling of 266949 in words is "two hundred sixty-six thousand, nine hundred forty-nine".