2660505613 has 8 divisors (see below), whose sum is σ = 2719933632. Its totient is φ = 2601657696.

The previous prime is 2660505599. The next prime is 2660505623. The reversal of 2660505613 is 3165050662.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2660505613 - 2²¹ = 2658408461 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2660505623) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 135745 + ... + 154102.

It is an arithmetic number, because the mean of its divisors is an integer number (339991704).

Almost surely, 2^2660505613 is an apocalyptic number.

It is an amenable number.

2660505613 is a deficient number, since it is larger than the sum of its proper divisors (59428019).

2660505613 is a wasteful number, since it uses less digits than its factorization.

2660505613 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 290051.

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

The square root of 2660505613 is about 51580.0893077940. The cubic root of 2660505613 is about 1385.6537661694.

The spelling of 2660505613 in words is "two billion, six hundred sixty million, five hundred five thousand, six hundred thirteen".