6428727847 has 2 divisors, whose sum is σ = 6428727848. Its totient is φ = 6428727846.

The previous prime is 6428727829. The next prime is 6428727887. The reversal of 6428727847 is 7487278246.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-6428727847 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6428727887) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3214363923 + 3214363924.

It is an arithmetic number, because the mean of its divisors is an integer number (3214363924).

Almost surely, 2^6428727847 is an apocalyptic number.

6428727847 is a deficient number, since it is larger than the sum of its proper divisors (1).

6428727847 is an equidigital number, since it uses as much as digits as its factorization.

6428727847 is an evil number, because the sum of its binary digits is even.

The product of its digits is 8429568, while the sum is 55.

The square root of 6428727847 is about 80179.3480080750. The cubic root of 6428727847 is about 1859.4093633767.

The spelling of 6428727847 in words is "six billion, four hundred twenty-eight million, seven hundred twenty-seven thousand, eight hundred forty-seven".