6646383613 has 16 divisors (see below), whose sum is σ = 6795694080. Its totient is φ = 6499028736.

The previous prime is 6646383533. The next prime is 6646383617. The reversal of 6646383613 is 3163836466.

It is a cyclic number.

It is not a de Polignac number, because 6646383613 - 2⁹ = 6646383101 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 (6646383617) 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, 5195908 + ... + 5197186.

It is an arithmetic number, because the mean of its divisors is an integer number (424730880).

Almost surely, 2^6646383613 is an apocalyptic number.

It is an amenable number.

6646383613 is a deficient number, since it is larger than the sum of its proper divisors (149310467).

6646383613 is a wasteful number, since it uses less digits than its factorization.

6646383613 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1956.

The product of its digits is 1119744, while the sum is 46.

The square root of 6646383613 is about 81525.3556447318. The cubic root of 6646383613 is about 1880.1614103342.

The spelling of 6646383613 in words is "six billion, six hundred forty-six million, three hundred eighty-three thousand, six hundred thirteen".