6467448709 has 2 divisors, whose sum is σ = 6467448710. Its totient is φ = 6467448708.

The previous prime is 6467448671. The next prime is 6467448719. The reversal of 6467448709 is 9078447646.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 6086340225 + 381108484 = 78015^2 + 19522^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-6467448709 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 6467448709.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6467448719) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3233724354 + 3233724355.

It is an arithmetic number, because the mean of its divisors is an integer number (3233724355).

Almost surely, 2^6467448709 is an apocalyptic number.

It is an amenable number.

6467448709 is a deficient number, since it is larger than the sum of its proper divisors (1).

6467448709 is an equidigital number, since it uses as much as digits as its factorization.

6467448709 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 8128512, while the sum is 55.

The square root of 6467448709 is about 80420.4495697456. The cubic root of 6467448709 is about 1863.1350286824.

The spelling of 6467448709 in words is "six billion, four hundred sixty-seven million, four hundred forty-eight thousand, seven hundred nine".