266368 has 16 divisors (see below), whose sum is σ = 530910. Its totient is φ = 133120.

The previous prime is 266359. The next prime is 266369. The reversal of 266368 is 863662.

It can be written as a sum of positive squares in only one way, i.e., 238144 + 28224 = 488^2 + 168^2 .

It is a tau number, because it is divible by the number of its divisors (16).

It is a super-2 number, since 2×266368² = 141903822848, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (266369) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (3) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 913 + ... + 1168.

2²⁶⁶³⁶⁸ is an apocalyptic number.

It is an amenable number.

266368 is a deficient number, since it is larger than the sum of its proper divisors (264542).

266368 is an equidigital number, since it uses as much as digits as its factorization.

266368 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2095 (or 2083 counting only the distinct ones).

The product of its digits is 10368, while the sum is 31.

The square root of 266368 is about 516.1085157213. The cubic root of 266368 is about 64.3419200389.

The spelling of 266368 in words is "two hundred sixty-six thousand, three hundred sixty-eight".