266441 has 8 divisors (see below), whose sum is σ = 322560. Its totient is φ = 214848.

The previous prime is 266417. The next prime is 266447. The reversal of 266441 is 144662.

It is a happy number.

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 266441 - 2¹⁰ = 265417 is a prime.

It is a d-powerful number, because it can be written as 2⁷ + 6² + 4⁶ + 6² + 4⁹ + 1 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (266447) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1001 + ... + 1238.

It is an arithmetic number, because the mean of its divisors is an integer number (40320).

2²⁶⁶⁴⁴¹ is an apocalyptic number.

It is an amenable number.

266441 is a deficient number, since it is larger than the sum of its proper divisors (56119).

266441 is a wasteful number, since it uses less digits than its factorization.

266441 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2263.

The product of its digits is 1152, while the sum is 23.

The square root of 266441 is about 516.1792324377. The cubic root of 266441 is about 64.3477972854.

It can be divided in two parts, 266 and 441, that added together give a palindrome (707).

The spelling of 266441 in words is "two hundred sixty-six thousand, four hundred forty-one".