266949313 has 2 divisors, whose sum is σ = 266949314. Its totient is φ = 266949312.

The previous prime is 266949307. The next prime is 266949329. The reversal of 266949313 is 313949662.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 233111824 + 33837489 = 15268^2 + 5817^2 .

It is a cyclic number.

It is not a de Polignac number, because 266949313 - 2⁵ = 266949281 is a prime.

It is a super-2 number, since 2×266949313² = 142523871422343938, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 266949313.

It is not a weakly prime, because it can be changed into another prime (266949343) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 133474656 + 133474657.

It is an arithmetic number, because the mean of its divisors is an integer number (133474657).

Almost surely, 2^266949313 is an apocalyptic number.

It is an amenable number.

266949313 is a deficient number, since it is larger than the sum of its proper divisors (1).

266949313 is an equidigital number, since it uses as much as digits as its factorization.

266949313 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 209952, while the sum is 43.

The square root of 266949313 is about 16338.5835677393. The cubic root of 266949313 is about 643.8869194673.

The spelling of 266949313 in words is "two hundred sixty-six million, nine hundred forty-nine thousand, three hundred thirteen".