266189 has 8 divisors (see below), whose sum is σ = 331968. Its totient is φ = 207360.

The previous prime is 266183. The next prime is 266221. The reversal of 266189 is 981662.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-266189 is a prime.

It is a Curzon number.

It is a nialpdrome in base 13.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (266183) 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, 1652 + ... + 1805.

It is an arithmetic number, because the mean of its divisors is an integer number (41496).

2²⁶⁶¹⁸⁹ is an apocalyptic number.

It is an amenable number.

266189 is a deficient number, since it is larger than the sum of its proper divisors (65779).

266189 is a wasteful number, since it uses less digits than its factorization.

266189 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3475.

The product of its digits is 5184, while the sum is 32.

The square root of 266189 is about 515.9350734346. The cubic root of 266189 is about 64.3275041625.

The spelling of 266189 in words is "two hundred sixty-six thousand, one hundred eighty-nine".