266565012 has 96 divisors (see below), whose sum is σ = 731566080. Its totient is φ = 73968000.

The previous prime is 266565007. The next prime is 266565017. The reversal of 266565012 is 210565662.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (266565007) and next prime (266565017).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (266565017) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 990814 + ... + 991082.

It is an arithmetic number, because the mean of its divisors is an integer number (7620480).

Almost surely, 2^266565012 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 266565012, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (365783040).

266565012 is an abundant number, since it is smaller than the sum of its proper divisors (465001068).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

266565012 is a wasteful number, since it uses less digits than its factorization.

266565012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 581 (or 579 counting only the distinct ones).

The product of its (nonzero) digits is 21600, while the sum is 33.

The square root of 266565012 is about 16326.8187960790. The cubic root of 266565012 is about 643.5777905908.

It can be divided in two parts, 2665650 and 12, that added together give a palindrome (2665662).

The spelling of 266565012 in words is "two hundred sixty-six million, five hundred sixty-five thousand, twelve".