266265563 has 8 divisors (see below), whose sum is σ = 282067920. Its totient is φ = 250642080.

The previous prime is 266265547. The next prime is 266265583. The reversal of 266265563 is 365562662.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 266265563 - 2⁴ = 266265547 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 266265563.

It is not an unprimeable number, because it can be changed into a prime (266265523) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 41648 + ... + 47613.

It is an arithmetic number, because the mean of its divisors is an integer number (35258490).

Almost surely, 2^266265563 is an apocalyptic number.

266265563 is a deficient number, since it is larger than the sum of its proper divisors (15802357).

266265563 is a wasteful number, since it uses less digits than its factorization.

266265563 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 89437.

The product of its digits is 388800, while the sum is 41.

The square root of 266265563 is about 16317.6457554391. The cubic root of 266265563 is about 643.3367100207.

The spelling of 266265563 in words is "two hundred sixty-six million, two hundred sixty-five thousand, five hundred sixty-three".