6539717 has 2 divisors, whose sum is σ = 6539718. Its totient is φ = 6539716.

The previous prime is 6539707. The next prime is 6539719. The reversal of 6539717 is 7179356.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 4468996 + 2070721 = 2114^2 + 1439^2 .

It is a cyclic number.

It is not a de Polignac number, because 6539717 - 2²⁰ = 5491141 is a prime.

Together with 6539719, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6539719) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3269858 + 3269859.

It is an arithmetic number, because the mean of its divisors is an integer number (3269859).

Almost surely, 2^6539717 is an apocalyptic number.

It is an amenable number.

6539717 is a deficient number, since it is larger than the sum of its proper divisors (1).

6539717 is an equidigital number, since it uses as much as digits as its factorization.

6539717 is an evil number, because the sum of its binary digits is even.

The product of its digits is 39690, while the sum is 38.

The square root of 6539717 is about 2557.2870390318. The cubic root of 6539717 is about 187.0048994494.

The spelling of 6539717 in words is "six million, five hundred thirty-nine thousand, seven hundred seventeen".