6778884409 has 8 divisors (see below), whose sum is σ = 7395799680. Its totient is φ = 6162078000.

The previous prime is 6778884403. The next prime is 6778884443. The reversal of 6778884409 is 9044888776.

6778884409 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

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 6778884409 - 2¹³ = 6778876217 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6778884403) 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, 157584 + ... + 195934.

It is an arithmetic number, because the mean of its divisors is an integer number (924474960).

Almost surely, 2^6778884409 is an apocalyptic number.

It is an amenable number.

6778884409 is a deficient number, since it is larger than the sum of its proper divisors (616915271).

6778884409 is a wasteful number, since it uses less digits than its factorization.

6778884409 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54431.

The product of its (nonzero) digits is 21676032, while the sum is 61.

The square root of 6778884409 is about 82333.9808888165. The cubic root of 6778884409 is about 1892.5734480760.

The spelling of 6778884409 in words is "six billion, seven hundred seventy-eight million, eight hundred eighty-four thousand, four hundred nine".