6728447507 has 2 divisors, whose sum is σ = 6728447508. Its totient is φ = 6728447506.

The previous prime is 6728447477. The next prime is 6728447513. The reversal of 6728447507 is 7057448276.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 6728447507 - 2⁶ = 6728447443 is a prime.

It is not a weakly prime, because it can be changed into another prime (6728447567) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3364223753 + 3364223754.

It is an arithmetic number, because the mean of its divisors is an integer number (3364223754).

Almost surely, 2^6728447507 is an apocalyptic number.

6728447507 is a deficient number, since it is larger than the sum of its proper divisors (1).

6728447507 is an equidigital number, since it uses as much as digits as its factorization.

6728447507 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2634240, while the sum is 50.

The square root of 6728447507 is about 82027.1144622313. The cubic root of 6728447507 is about 1887.8679902486.

The spelling of 6728447507 in words is "six billion, seven hundred twenty-eight million, four hundred forty-seven thousand, five hundred seven".