266873 has 4 divisors (see below), whose sum is σ = 269568. Its totient is φ = 264180.

The previous prime is 266867. The next prime is 266891. The reversal of 266873 is 378662.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 266873 - 2¹⁴ = 250489 is a prime.

It is a Duffinian number.

It is a Curzon 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 3 ways as a sum of consecutive naturals, for example, 1193 + ... + 1398.

It is an arithmetic number, because the mean of its divisors is an integer number (67392).

2²⁶⁶⁸⁷³ is an apocalyptic number.

It is an amenable number.

266873 is a deficient number, since it is larger than the sum of its proper divisors (2695).

266873 is a wasteful number, since it uses less digits than its factorization.

266873 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2694.

The product of its digits is 12096, while the sum is 32.

The square root of 266873 is about 516.5975222550. The cubic root of 266873 is about 64.3825557474.

The spelling of 266873 in words is "two hundred sixty-six thousand, eight hundred seventy-three".