6538447 has 2 divisors, whose sum is σ = 6538448. Its totient is φ = 6538446.

The previous prime is 6538429. The next prime is 6538453. The reversal of 6538447 is 7448356.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 6538447 - 2¹⁹ = 6014159 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6538457) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3269223 + 3269224.

It is an arithmetic number, because the mean of its divisors is an integer number (3269224).

Almost surely, 2^6538447 is an apocalyptic number.

6538447 is a deficient number, since it is larger than the sum of its proper divisors (1).

6538447 is an equidigital number, since it uses as much as digits as its factorization.

6538447 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 80640, while the sum is 37.

The square root of 6538447 is about 2557.0387169537. The cubic root of 6538447 is about 186.9927933395.

Subtracting 6538447 from its reverse (7448356), we obtain a palindrome (909909).

The spelling of 6538447 in words is "six million, five hundred thirty-eight thousand, four hundred forty-seven".