6642327613 has 2 divisors, whose sum is σ = 6642327614. Its totient is φ = 6642327612.

The previous prime is 6642327607. The next prime is 6642327689. The reversal of 6642327613 is 3167232466.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 5016463929 + 1625863684 = 70827^2 + 40322^2 .

It is a cyclic number.

It is not a de Polignac number, because 6642327613 - 2²⁵ = 6608773181 is a prime.

It is a super-2 number, since 2×6642327613² = 88241032236844555538, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6642327413) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3321163806 + 3321163807.

It is an arithmetic number, because the mean of its divisors is an integer number (3321163807).

Almost surely, 2^6642327613 is an apocalyptic number.

It is an amenable number.

6642327613 is a deficient number, since it is larger than the sum of its proper divisors (1).

6642327613 is an equidigital number, since it uses as much as digits as its factorization.

6642327613 is an evil number, because the sum of its binary digits is even.

The product of its digits is 217728, while the sum is 40.

The square root of 6642327613 is about 81500.4761519833. The cubic root of 6642327613 is about 1879.7788721545.

The spelling of 6642327613 in words is "six billion, six hundred forty-two million, three hundred twenty-seven thousand, six hundred thirteen".