6417656813 has 2 divisors, whose sum is σ = 6417656814. Its totient is φ = 6417656812.

The previous prime is 6417656789. The next prime is 6417656863. The reversal of 6417656813 is 3186567146.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 5643314884 + 774341929 = 75122^2 + 27827^2 .

It is a cyclic number.

It is not a de Polignac number, because 6417656813 - 2²⁶ = 6350547949 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6417656863) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3208828406 + 3208828407.

It is an arithmetic number, because the mean of its divisors is an integer number (3208828407).

Almost surely, 2^6417656813 is an apocalyptic number.

It is an amenable number.

6417656813 is a deficient number, since it is larger than the sum of its proper divisors (1).

6417656813 is an equidigital number, since it uses as much as digits as its factorization.

6417656813 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 725760, while the sum is 47.

The square root of 6417656813 is about 80110.2790720392. The cubic root of 6417656813 is about 1858.3413753791.

The spelling of 6417656813 in words is "six billion, four hundred seventeen million, six hundred fifty-six thousand, eight hundred thirteen".