6496881613 has 4 divisors (see below), whose sum is σ = 6500602240. Its totient is φ = 6493160988.

The previous prime is 6496881593. The next prime is 6496881631. The reversal of 6496881613 is 3161886946.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-6496881613 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6496881673) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1857693 + ... + 1861186.

It is an arithmetic number, because the mean of its divisors is an integer number (1625150560).

Almost surely, 2^6496881613 is an apocalyptic number.

It is an amenable number.

6496881613 is a deficient number, since it is larger than the sum of its proper divisors (3720627).

6496881613 is a wasteful number, since it uses less digits than its factorization.

6496881613 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3720626.

The product of its digits is 1492992, while the sum is 52.

The square root of 6496881613 is about 80603.2357477043. The cubic root of 6496881613 is about 1865.9570841494.

The spelling of 6496881613 in words is "six billion, four hundred ninety-six million, eight hundred eighty-one thousand, six hundred thirteen".