266807 has 4 divisors (see below), whose sum is σ = 274056. Its totient is φ = 259560.

The previous prime is 266801. The next prime is 266821. The reversal of 266807 is 708662.

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

It is a cyclic number.

It is not a de Polignac number, because 266807 - 2¹⁴ = 250423 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 266807.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 266807.

It is not an unprimeable number, because it can be changed into a prime (266801) 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, 3569 + ... + 3642.

It is an arithmetic number, because the mean of its divisors is an integer number (68514).

2²⁶⁶⁸⁰⁷ is an apocalyptic number.

266807 is a deficient number, since it is larger than the sum of its proper divisors (7249).

266807 is an equidigital number, since it uses as much as digits as its factorization.

266807 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7248.

The product of its (nonzero) digits is 4032, while the sum is 29.

The square root of 266807 is about 516.5336387884. The cubic root of 266807 is about 64.3772478557.

The spelling of 266807 in words is "two hundred sixty-six thousand, eight hundred seven".