6684120609 has 8 divisors (see below), whose sum is σ = 8923180320. Its totient is φ = 4450570656.

The previous prime is 6684120589. The next prime is 6684120623. The reversal of 6684120609 is 9060214866.

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

It is not a de Polignac number, because 6684120609 - 2¹⁵ = 6684087841 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (6684122609) 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, 1374607 + ... + 1379460.

It is an arithmetic number, because the mean of its divisors is an integer number (1115397540).

Almost surely, 2^6684120609 is an apocalyptic number.

It is an amenable number.

6684120609 is a deficient number, since it is larger than the sum of its proper divisors (2239059711).

6684120609 is a wasteful number, since it uses less digits than its factorization.

6684120609 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2754879.

The product of its (nonzero) digits is 124416, while the sum is 42.

The square root of 6684120609 is about 81756.4713585414. The cubic root of 6684120609 is about 1883.7131053149.

The spelling of 6684120609 in words is "six billion, six hundred eighty-four million, one hundred twenty thousand, six hundred nine".