2660563565 has 16 divisors (see below), whose sum is σ = 3493929600. Its totient is φ = 1928838720.

The previous prime is 2660563537. The next prime is 2660563567. The reversal of 2660563565 is 5653650662.

It is not a de Polignac number, because 2660563565 - 2¹⁸ = 2660301421 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2660563567) by changing a digit.

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, 58865 + ... + 93734.

It is an arithmetic number, because the mean of its divisors is an integer number (218370600).

Almost surely, 2^2660563565 is an apocalyptic number.

It is an amenable number.

2660563565 is a deficient number, since it is larger than the sum of its proper divisors (833366035).

2660563565 is a wasteful number, since it uses less digits than its factorization.

2660563565 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 152932.

The product of its (nonzero) digits is 972000, while the sum is 44.

The square root of 2660563565 is about 51580.6510718894. The cubic root of 2660563565 is about 1385.6638270170.

The spelling of 2660563565 in words is "two billion, six hundred sixty million, five hundred sixty-three thousand, five hundred sixty-five".