2660013565 has 16 divisors (see below), whose sum is σ = 3534177600. Its totient is φ = 1905678720.

The previous prime is 2660013553. The next prime is 2660013593. The reversal of 2660013565 is 5653100662.

It is not a de Polignac number, because 2660013565 - 2⁵ = 2660013533 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2660013565.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 357240 + ... + 364609.

It is an arithmetic number, because the mean of its divisors is an integer number (220886100).

Almost surely, 2^2660013565 is an apocalyptic number.

It is an amenable number.

2660013565 is a deficient number, since it is larger than the sum of its proper divisors (874164035).

2660013565 is a wasteful number, since it uses less digits than its factorization.

2660013565 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 721932.

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

The square root of 2660013565 is about 51575.3193397772. The cubic root of 2660013565 is about 1385.5683375204.

The spelling of 2660013565 in words is "two billion, six hundred sixty million, thirteen thousand, five hundred sixty-five".