2660340993 has 16 divisors (see below), whose sum is σ = 3752781120. Its totient is φ = 1671679296.

The previous prime is 2660340911. The next prime is 2660341001. The reversal of 2660340993 is 3990430662.

It is not a de Polignac number, because 2660340993 - 2²⁰ = 2659292417 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2660340493) 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 15 ways as a sum of consecutive naturals, for example, 107230 + ... + 129687.

It is an arithmetic number, because the mean of its divisors is an integer number (234548820).

Almost surely, 2^2660340993 is an apocalyptic number.

It is an amenable number.

2660340993 is a deficient number, since it is larger than the sum of its proper divisors (1092440127).

2660340993 is a wasteful number, since it uses less digits than its factorization.

2660340993 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 237136.

The product of its (nonzero) digits is 209952, while the sum is 42.

The square root of 2660340993 is about 51578.4935123158. The cubic root of 2660340993 is about 1385.6251862601.

The spelling of 2660340993 in words is "two billion, six hundred sixty million, three hundred forty thousand, nine hundred ninety-three".