266812117 has 32 divisors (see below), whose sum is σ = 332075520. Its totient is φ = 210755520.

The previous prime is 266812103. The next prime is 266812129. The reversal of 266812117 is 711218662.

It is a cyclic number.

It is not a de Polignac number, because 266812117 - 2¹⁵ = 266779349 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 (266812417) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 768738 + ... + 769084.

It is an arithmetic number, because the mean of its divisors is an integer number (10377360).

Almost surely, 2^266812117 is an apocalyptic number.

It is an amenable number.

266812117 is a deficient number, since it is larger than the sum of its proper divisors (65263403).

266812117 is a wasteful number, since it uses less digits than its factorization.

266812117 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 673.

The product of its digits is 8064, while the sum is 34.

The square root of 266812117 is about 16334.3845001886. The cubic root of 266812117 is about 643.7765940941.

The spelling of 266812117 in words is "two hundred sixty-six million, eight hundred twelve thousand, one hundred seventeen".