6647873969 has 8 divisors (see below), whose sum is σ = 7406529408. Its totient is φ = 5914935760.

The previous prime is 6647873963. The next prime is 6647873971. The reversal of 6647873969 is 9693787466.

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-6647873969 is a prime.

It is a super-2 number, since 2×6647873969² = 88388456615415625922, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (6647873963) 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, 6428762 + ... + 6429795.

It is an arithmetic number, because the mean of its divisors is an integer number (925816176).

Almost surely, 2^6647873969 is an apocalyptic number.

It is an amenable number.

6647873969 is a deficient number, since it is larger than the sum of its proper divisors (758655439).

6647873969 is a wasteful number, since it uses less digits than its factorization.

6647873969 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12858615.

The product of its digits is 82301184, while the sum is 65.

The square root of 6647873969 is about 81534.4955770256. The cubic root of 6647873969 is about 1880.3019328892.

The spelling of 6647873969 in words is "six billion, six hundred forty-seven million, eight hundred seventy-three thousand, nine hundred sixty-nine".