6497539 has 2 divisors, whose sum is σ = 6497540. Its totient is φ = 6497538.

The previous prime is 6497509. The next prime is 6497581. The reversal of 6497539 is 9357946.

6497539 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 6497539 - 2¹¹ = 6495491 is a prime.

6497539 is a lucky number.

It is a junction number, because it is equal to n+sod(n) for n = 6497495 and 6497504.

It is not a weakly prime, because it can be changed into another prime (6497509) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3248769 + 3248770.

It is an arithmetic number, because the mean of its divisors is an integer number (3248770).

Almost surely, 2^6497539 is an apocalyptic number.

6497539 is a deficient number, since it is larger than the sum of its proper divisors (1).

6497539 is an equidigital number, since it uses as much as digits as its factorization.

6497539 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 204120, while the sum is 43.

The square root of 6497539 is about 2549.0270692953. The cubic root of 6497539 is about 186.6020017653.

The spelling of 6497539 in words is "six million, four hundred ninety-seven thousand, five hundred thirty-nine".