266200065 has 12 divisors (see below), whose sum is σ = 461413524. Its totient is φ = 141973344.

The previous prime is 266200063. The next prime is 266200073. The reversal of 266200065 is 560002662.

It can be written as a sum of positive squares in 2 ways, for example, as 43086096 + 223113969 = 6564^2 + 14937^2 .

It is not a de Polignac number, because 266200065 - 2¹ = 266200063 is a prime.

It is not an unprimeable number, because it can be changed into a prime (266200063) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2957734 + ... + 2957823.

It is an arithmetic number, because the mean of its divisors is an integer number (38451127).

Almost surely, 2^266200065 is an apocalyptic number.

It is an amenable number.

266200065 is a deficient number, since it is larger than the sum of its proper divisors (195213459).

266200065 is a wasteful number, since it uses less digits than its factorization.

266200065 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5915568 (or 5915565 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 27.

The square root of 266200065 is about 16315.6386635645. The cubic root of 266200065 is about 643.2839547653.

The spelling of 266200065 in words is "two hundred sixty-six million, two hundred thousand, sixty-five".