266263 has 4 divisors (see below), whose sum is σ = 268200. Its totient is φ = 264328.

The previous prime is 266261. The next prime is 266269. The reversal of 266263 is 362662.

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

It is a cyclic number.

It is not a de Polignac number, because 266263 - 2¹ = 266261 is a prime.

266263 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (266261) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 745 + ... + 1042.

It is an arithmetic number, because the mean of its divisors is an integer number (67050).

2²⁶⁶²⁶³ is an apocalyptic number.

266263 is a deficient number, since it is larger than the sum of its proper divisors (1937).

266263 is a wasteful number, since it uses less digits than its factorization.

266263 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1936.

The product of its digits is 2592, while the sum is 25.

The square root of 266263 is about 516.0067829012. The cubic root of 266263 is about 64.3334645819. Note that the first 3 decimals are identical.

It can be divided in two parts, 266 and 263, that added together give a square (529 = 23²).

The spelling of 266263 in words is "two hundred sixty-six thousand, two hundred sixty-three".