6497865539 has 8 divisors (see below), whose sum is σ = 7396780032. Its totient is φ = 5650317640.

The previous prime is 6497865527. The next prime is 6497865547. The reversal of 6497865539 is 9355687946.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 6497865539 - 2¹² = 6497861443 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6497865509) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12841379 + ... + 12841884.

It is an arithmetic number, because the mean of its divisors is an integer number (924597504).

Almost surely, 2^6497865539 is an apocalyptic number.

6497865539 is a deficient number, since it is larger than the sum of its proper divisors (898914493).

6497865539 is a wasteful number, since it uses less digits than its factorization.

6497865539 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25683297.

The product of its digits is 48988800, while the sum is 62.

The square root of 6497865539 is about 80609.3390309088. The cubic root of 6497865539 is about 1866.0512765699.

The spelling of 6497865539 in words is "six billion, four hundred ninety-seven million, eight hundred sixty-five thousand, five hundred thirty-nine".