8646917647 has 2 divisors, whose sum is σ = 8646917648. Its totient is φ = 8646917646.

The previous prime is 8646917611. The next prime is 8646917677. The reversal of 8646917647 is 7467196468.

8646917647 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-8646917647 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 8646917591 and 8646917600.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (8646917677) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4323458823 + 4323458824.

It is an arithmetic number, because the mean of its divisors is an integer number (4323458824).

Almost surely, 2^8646917647 is an apocalyptic number.

8646917647 is a deficient number, since it is larger than the sum of its proper divisors (1).

8646917647 is an equidigital number, since it uses as much as digits as its factorization.

8646917647 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 12192768, while the sum is 58.

The square root of 8646917647 is about 92988.8038798220. The cubic root of 8646917647 is about 2052.5186292714.

The spelling of 8646917647 in words is "eight billion, six hundred forty-six million, nine hundred seventeen thousand, six hundred forty-seven".