6728447471 has 2 divisors, whose sum is σ = 6728447472. Its totient is φ = 6728447470.

The previous prime is 6728447443. The next prime is 6728447477. The reversal of 6728447471 is 1747448276.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 6728447471 - 2¹⁸ = 6728185327 is a prime.

It is a super-3 number, since 3×6728447471³ (a number of 30 digits) contains 333 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6728447477) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3364223735 + 3364223736.

It is an arithmetic number, because the mean of its divisors is an integer number (3364223736).

Almost surely, 2^6728447471 is an apocalyptic number.

6728447471 is a deficient number, since it is larger than the sum of its proper divisors (1).

6728447471 is an equidigital number, since it uses as much as digits as its factorization.

6728447471 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2107392, while the sum is 50.

The square root of 6728447471 is about 82027.1142427917. The cubic root of 6728447471 is about 1887.8679868816.

The spelling of 6728447471 in words is "six billion, seven hundred twenty-eight million, four hundred forty-seven thousand, four hundred seventy-one".