6468338647 has 2 divisors, whose sum is σ = 6468338648. Its totient is φ = 6468338646.

The previous prime is 6468338633. The next prime is 6468338651. The reversal of 6468338647 is 7468338646.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 6468338647 - 2¹⁹ = 6467814359 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6468338677) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3234169323 + 3234169324.

It is an arithmetic number, because the mean of its divisors is an integer number (3234169324).

Almost surely, 2^6468338647 is an apocalyptic number.

6468338647 is a deficient number, since it is larger than the sum of its proper divisors (1).

6468338647 is an equidigital number, since it uses as much as digits as its factorization.

6468338647 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 13934592, while the sum is 55.

The square root of 6468338647 is about 80425.9824124020. The cubic root of 6468338647 is about 1863.2204821943.

Subtracting 6468338647 from its reverse (7468338646), we obtain a palindrome (999999999).

The spelling of 6468338647 in words is "six billion, four hundred sixty-eight million, three hundred thirty-eight thousand, six hundred forty-seven".