6684916609 has 8 divisors (see below), whose sum is σ = 7714079360. Its totient is φ = 5674297536.

The previous prime is 6684916607. The next prime is 6684916631. The reversal of 6684916609 is 9066194866.

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

It is a cyclic number.

It is not a de Polignac number, because 6684916609 - 2¹ = 6684916607 is a prime.

It is a super-2 number, since 2×6684916609² = 89376220138568117762, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 6684916609.

It is not an unprimeable number, because it can be changed into a prime (6684916603) 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, 4635144 + ... + 4636585.

It is an arithmetic number, because the mean of its divisors is an integer number (964259920).

Almost surely, 2^6684916609 is an apocalyptic number.

It is an amenable number.

6684916609 is a deficient number, since it is larger than the sum of its proper divisors (1029162751).

6684916609 is a wasteful number, since it uses less digits than its factorization.

6684916609 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9271839.

The product of its (nonzero) digits is 3359232, while the sum is 55.

The square root of 6684916609 is about 81761.3393297835. The cubic root of 6684916609 is about 1883.7878783579.

The spelling of 6684916609 in words is "six billion, six hundred eighty-four million, nine hundred sixteen thousand, six hundred nine".