266366 has 4 divisors (see below), whose sum is σ = 399552. Its totient is φ = 133182.

The previous prime is 266359. The next prime is 266369. The reversal of 266366 is 663662.

It is a semiprime because it is the product of two primes.

It is a Curzon number.

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 266366.

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

266366 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 66590 + ... + 66593.

It is an arithmetic number, because the mean of its divisors is an integer number (99888).

2²⁶⁶³⁶⁶ is an apocalyptic number.

266366 is a deficient number, since it is larger than the sum of its proper divisors (133186).

266366 is a wasteful number, since it uses less digits than its factorization.

266366 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 133185.

The product of its digits is 7776, while the sum is 29.

The square root of 266366 is about 516.1065781406. The cubic root of 266366 is about 64.3417590034.

The spelling of 266366 in words is "two hundred sixty-six thousand, three hundred sixty-six".