6678535209 has 8 divisors (see below), whose sum is σ = 8915035392. Its totient is φ = 4447195920.

The previous prime is 6678535133. The next prime is 6678535229. The reversal of 6678535209 is 9025358766.

It is a happy number.

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

It is not a de Polignac number, because 6678535209 - 2⁸ = 6678534953 is a prime.

It is not an unprimeable number, because it can be changed into a prime (6678535229) 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, 1287202 + ... + 1292379.

It is an arithmetic number, because the mean of its divisors is an integer number (1114379424).

Almost surely, 2^6678535209 is an apocalyptic number.

It is an amenable number.

6678535209 is a deficient number, since it is larger than the sum of its proper divisors (2236500183).

6678535209 is a wasteful number, since it uses less digits than its factorization.

6678535209 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2580447.

The product of its (nonzero) digits is 2721600, while the sum is 51.

The square root of 6678535209 is about 81722.3054557322. The cubic root of 6678535209 is about 1883.1882682289.

The spelling of 6678535209 in words is "six billion, six hundred seventy-eight million, five hundred thirty-five thousand, two hundred nine".