6539671 has 2 divisors, whose sum is σ = 6539672. Its totient is φ = 6539670.

The previous prime is 6539647. The next prime is 6539681. The reversal of 6539671 is 1769356.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 6539671 - 2¹³ = 6531479 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 6539671.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6539681) 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, 3269835 + 3269836.

It is an arithmetic number, because the mean of its divisors is an integer number (3269836).

Almost surely, 2^6539671 is an apocalyptic number.

6539671 is a deficient number, since it is larger than the sum of its proper divisors (1).

6539671 is an equidigital number, since it uses as much as digits as its factorization.

6539671 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 34020, while the sum is 37.

The square root of 6539671 is about 2557.2780451097. The cubic root of 6539671 is about 187.0044609877.

The spelling of 6539671 in words is "six million, five hundred thirty-nine thousand, six hundred seventy-one".