266869 has 8 divisors (see below), whose sum is σ = 286272. Its totient is φ = 248160.

The previous prime is 266867. The next prime is 266891. The reversal of 266869 is 968662.

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 266869 - 2¹ = 266867 is a prime.

It is a super-2 number, since 2×266869² = 142438126322, which contains 22 as substring.

It is a Duffinian number.

266869 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (266863) 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, 802 + ... + 1084.

It is an arithmetic number, because the mean of its divisors is an integer number (35784).

2²⁶⁶⁸⁶⁹ is an apocalyptic number.

It is an amenable number.

266869 is a deficient number, since it is larger than the sum of its proper divisors (19403).

266869 is a wasteful number, since it uses less digits than its factorization.

266869 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 347.

The product of its digits is 31104, while the sum is 37.

The square root of 266869 is about 516.5936507546. The cubic root of 266869 is about 64.3822340819.

The spelling of 266869 in words is "two hundred sixty-six thousand, eight hundred sixty-nine".