266349 has 8 divisors (see below), whose sum is σ = 362880. Its totient is φ = 173696.

The previous prime is 266333. The next prime is 266351. The reversal of 266349 is 943662.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 266349 - 2⁴ = 266333 is a prime.

It is an Ulam number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (266359) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 804 + ... + 1085.

It is an arithmetic number, because the mean of its divisors is an integer number (45360).

2²⁶⁶³⁴⁹ is an apocalyptic number.

It is an amenable number.

266349 is a deficient number, since it is larger than the sum of its proper divisors (96531).

266349 is a wasteful number, since it uses less digits than its factorization.

266349 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1939.

The product of its digits is 7776, while the sum is 30.

The square root of 266349 is about 516.0901084113. The cubic root of 266349 is about 64.3403901685.

The spelling of 266349 in words is "two hundred sixty-six thousand, three hundred forty-nine".