5686666847 has 2 divisors, whose sum is σ = 5686666848. Its totient is φ = 5686666846.

The previous prime is 5686666757. The next prime is 5686666849. The reversal of 5686666847 is 7486666865.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 5686666847 - 2²⁸ = 5418231391 is a prime.

Together with 5686666849, it forms a pair of twin primes.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 5686666847.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (5686666849) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2843333423 + 2843333424.

It is an arithmetic number, because the mean of its divisors is an integer number (2843333424).

Almost surely, 2^5686666847 is an apocalyptic number.

5686666847 is a deficient number, since it is larger than the sum of its proper divisors (1).

5686666847 is an equidigital number, since it uses as much as digits as its factorization.

5686666847 is an evil number, because the sum of its binary digits is even.

The product of its digits is 69672960, while the sum is 62.

The square root of 5686666847 is about 75409.9916920828. The cubic root of 5686666847 is about 1784.9220801510.

The spelling of 5686666847 in words is "five billion, six hundred eighty-six million, six hundred sixty-six thousand, eight hundred forty-seven".