6442726847 has 2 divisors, whose sum is σ = 6442726848. Its totient is φ = 6442726846.

The previous prime is 6442726841. The next prime is 6442726859. The reversal of 6442726847 is 7486272446.

6442726847 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 6442726847 - 2⁴ = 6442726831 is a prime.

It is a super-2 number, since 2×6442726847² = 83017458450109122818, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 6442726795 and 6442726804.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6442726841) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3221363423 + 3221363424.

It is an arithmetic number, because the mean of its divisors is an integer number (3221363424).

Almost surely, 2^6442726847 is an apocalyptic number.

6442726847 is a deficient number, since it is larger than the sum of its proper divisors (1).

6442726847 is an equidigital number, since it uses as much as digits as its factorization.

6442726847 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3612672, while the sum is 50.

The square root of 6442726847 is about 80266.5985762447. The cubic root of 6442726847 is about 1860.7580491080.

The spelling of 6442726847 in words is "six billion, four hundred forty-two million, seven hundred twenty-six thousand, eight hundred forty-seven".