266135065 has 16 divisors (see below), whose sum is σ = 366417792. Its totient is φ = 181776384.

The previous prime is 266135063. The next prime is 266135081. The reversal of 266135065 is 560531662.

It is a cyclic number.

It is not a de Polignac number, because 266135065 - 2¹ = 266135063 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 266135065.

It is not an unprimeable number, because it can be changed into a prime (266135063) 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 15 ways as a sum of consecutive naturals, for example, 5799 + ... + 23788.

It is an arithmetic number, because the mean of its divisors is an integer number (22901112).

Almost surely, 2^266135065 is an apocalyptic number.

It is an amenable number.

266135065 is a deficient number, since it is larger than the sum of its proper divisors (100282727).

266135065 is a wasteful number, since it uses less digits than its factorization.

266135065 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29856.

The product of its (nonzero) digits is 32400, while the sum is 34.

The square root of 266135065 is about 16313.6465880563. The cubic root of 266135065 is about 643.2315920673.

The spelling of 266135065 in words is "two hundred sixty-six million, one hundred thirty-five thousand, sixty-five".