266080247 has 4 divisors (see below), whose sum is σ = 266113680. Its totient is φ = 266046816.

The previous prime is 266080187. The next prime is 266080289. The reversal of 266080247 is 742080662.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 742080662 = 2 ⋅371040331.

It is a cyclic number.

It is not a de Polignac number, because 266080247 - 2⁶ = 266080183 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (266088247) 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, 2879 + ... + 23247.

It is an arithmetic number, because the mean of its divisors is an integer number (66528420).

Almost surely, 2^266080247 is an apocalyptic number.

266080247 is a deficient number, since it is larger than the sum of its proper divisors (33433).

266080247 is a wasteful number, since it uses less digits than its factorization.

266080247 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33432.

The product of its (nonzero) digits is 32256, while the sum is 35.

The square root of 266080247 is about 16311.9663744136. The cubic root of 266080247 is about 643.1874251569.

The spelling of 266080247 in words is "two hundred sixty-six million, eighty thousand, two hundred forty-seven".