6647001613 has 8 divisors (see below), whose sum is σ = 7643179328. Its totient is φ = 5662475424.

The previous prime is 6647001577. The next prime is 6647001623. The reversal of 6647001613 is 3161007466.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-6647001613 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 (6647001623) 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 in 7 ways as a sum of consecutive naturals, for example, 2911656 + ... + 2913937.

It is an arithmetic number, because the mean of its divisors is an integer number (955397416).

Almost surely, 2^6647001613 is an apocalyptic number.

It is an amenable number.

6647001613 is a deficient number, since it is larger than the sum of its proper divisors (996177715).

6647001613 is a wasteful number, since it uses less digits than its factorization.

6647001613 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5825763.

The product of its (nonzero) digits is 18144, while the sum is 34.

The square root of 6647001613 is about 81529.1457884847. The cubic root of 6647001613 is about 1880.2196828127.

The spelling of 6647001613 in words is "six billion, six hundred forty-seven million, one thousand, six hundred thirteen".