266605873 has 4 divisors (see below), whose sum is σ = 267200100. Its totient is φ = 266011648.

The previous prime is 266605841. The next prime is 266605879. The reversal of 266605873 is 378506662.

266605873 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 111154849 + 155451024 = 10543^2 + 12468^2 .

It is a cyclic number.

It is not a de Polignac number, because 266605873 - 2⁵ = 266605841 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (266605879) 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, 296440 + ... + 297337.

It is an arithmetic number, because the mean of its divisors is an integer number (66800025).

Almost surely, 2^266605873 is an apocalyptic number.

It is an amenable number.

266605873 is a deficient number, since it is larger than the sum of its proper divisors (594227).

266605873 is an equidigital number, since it uses as much as digits as its factorization.

266605873 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 594226.

The product of its (nonzero) digits is 362880, while the sum is 43.

The square root of 266605873 is about 16328.0700941661. The cubic root of 266605873 is about 643.6106729864.

The spelling of 266605873 in words is "two hundred sixty-six million, six hundred five thousand, eight hundred seventy-three".