266473 has 4 divisors (see below), whose sum is σ = 267520. Its totient is φ = 265428.

The previous prime is 266449. The next prime is 266477. The reversal of 266473 is 374662.

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, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 266473 - 2⁹ = 265961 is a prime.

It is a Duffinian number.

266473 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (266477) 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 3 ways as a sum of consecutive naturals, for example, 136 + ... + 742.

It is an arithmetic number, because the mean of its divisors is an integer number (66880).

2²⁶⁶⁴⁷³ is an apocalyptic number.

It is an amenable number.

266473 is a deficient number, since it is larger than the sum of its proper divisors (1047).

266473 is an equidigital number, since it uses as much as digits as its factorization.

266473 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1046.

The product of its digits is 6048, while the sum is 28.

The square root of 266473 is about 516.2102284922. The cubic root of 266473 is about 64.3503732742.

The spelling of 266473 in words is "two hundred sixty-six thousand, four hundred seventy-three".