266339 has 4 divisors (see below), whose sum is σ = 282024. Its totient is φ = 250656.

The previous prime is 266333. The next prime is 266351. The reversal of 266339 is 933662.

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 266339 - 2⁸ = 266083 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (266333) 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, 7817 + ... + 7850.

It is an arithmetic number, because the mean of its divisors is an integer number (70506).

2²⁶⁶³³⁹ is an apocalyptic number.

266339 is a deficient number, since it is larger than the sum of its proper divisors (15685).

266339 is a wasteful number, since it uses less digits than its factorization.

266339 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15684.

The product of its digits is 5832, while the sum is 29.

The square root of 266339 is about 516.0804200897. The cubic root of 266339 is about 64.3395849444.

The spelling of 266339 in words is "two hundred sixty-six thousand, three hundred thirty-nine".