6646327013 has 2 divisors, whose sum is σ = 6646327014. Its totient is φ = 6646327012.

The previous prime is 6646327003. The next prime is 6646327067. The reversal of 6646327013 is 3107236466.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 6290551969 + 355775044 = 79313^2 + 18862^2 .

It is a cyclic number.

It is not a de Polignac number, because 6646327013 - 2²² = 6642132709 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6646327003) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3323163506 + 3323163507.

It is an arithmetic number, because the mean of its divisors is an integer number (3323163507).

Almost surely, 2^6646327013 is an apocalyptic number.

It is an amenable number.

6646327013 is a deficient number, since it is larger than the sum of its proper divisors (1).

6646327013 is an equidigital number, since it uses as much as digits as its factorization.

6646327013 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 108864, while the sum is 38.

The square root of 6646327013 is about 81525.0085127257. The cubic root of 6646327013 is about 1880.1560732243.

The spelling of 6646327013 in words is "six billion, six hundred forty-six million, three hundred twenty-seven thousand, thirteen".