6715406647 has 2 divisors, whose sum is σ = 6715406648. Its totient is φ = 6715406646.

The previous prime is 6715406641. The next prime is 6715406681. The reversal of 6715406647 is 7466045176.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 6715406647 - 2²³ = 6707018039 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 6715406597 and 6715406606.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6715406641) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3357703323 + 3357703324.

It is an arithmetic number, because the mean of its divisors is an integer number (3357703324).

Almost surely, 2^6715406647 is an apocalyptic number.

6715406647 is a deficient number, since it is larger than the sum of its proper divisors (1).

6715406647 is an equidigital number, since it uses as much as digits as its factorization.

6715406647 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 846720, while the sum is 46.

The square root of 6715406647 is about 81947.5847539145. The cubic root of 6715406647 is about 1886.6475331369.

The spelling of 6715406647 in words is "six billion, seven hundred fifteen million, four hundred six thousand, six hundred forty-seven".