515065665 has 16 divisors (see below), whose sum is σ = 852523200. Its totient is φ = 265228992.

The previous prime is 515065637. The next prime is 515065679. The reversal of 515065665 is 566560515.

It is not a de Polignac number, because 515065665 - 2¹⁵ = 515032897 is a prime.

It is a Curzon number.

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, 591595 + ... + 592464.

It is an arithmetic number, because the mean of its divisors is an integer number (53282700).

Almost surely, 2^515065665 is an apocalyptic number.

It is an amenable number.

515065665 is a deficient number, since it is larger than the sum of its proper divisors (337457535).

515065665 is a wasteful number, since it uses less digits than its factorization.

515065665 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1184096.

The product of its (nonzero) digits is 135000, while the sum is 39.

The square root of 515065665 is about 22695.0581625163. The cubic root of 515065665 is about 801.5935242638.

The spelling of 515065665 in words is "five hundred fifteen million, sixty-five thousand, six hundred sixty-five".