266012065 has 16 divisors (see below), whose sum is σ = 366563520. Its totient is φ = 183280320.

The previous prime is 266012051. The next prime is 266012081. The reversal of 266012065 is 560210662.

It is not a de Polignac number, because 266012065 - 2⁹ = 266011553 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 126234 + ... + 128323.

It is an arithmetic number, because the mean of its divisors is an integer number (22910220).

Almost surely, 2^266012065 is an apocalyptic number.

It is an amenable number.

266012065 is a deficient number, since it is larger than the sum of its proper divisors (100551455).

266012065 is a wasteful number, since it uses less digits than its factorization.

266012065 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 254592.

The product of its (nonzero) digits is 4320, while the sum is 28.

The square root of 266012065 is about 16309.8763024126. The cubic root of 266012065 is about 643.1324823946.

The spelling of 266012065 in words is "two hundred sixty-six million, twelve thousand, sixty-five".