6778196208 has 320 divisors, whose sum is σ = 23855616000. Its totient is φ = 1798557696.

The previous prime is 6778196203. The next prime is 6778196213. The reversal of 6778196208 is 8026918776.

6778196208 is a `hidden beast` number, since 6 + 7 + 7 + 8 + 1 + 9 + 620 + 8 = 666.

It is an interprime number because it is at equal distance from previous prime (6778196203) and next prime (6778196213).

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6778196203) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 4060398 + ... + 4062066.

It is an arithmetic number, because the mean of its divisors is an integer number (74548800).

Almost surely, 2^6778196208 is an apocalyptic number.

6778196208 is a gapful number since it is divisible by the number (68) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 6778196208, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (11927808000).

6778196208 is an abundant number, since it is smaller than the sum of its proper divisors (17077419792).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

6778196208 is a wasteful number, since it uses less digits than its factorization.

6778196208 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1789 (or 1777 counting only the distinct ones).

The product of its (nonzero) digits is 2032128, while the sum is 54.

The square root of 6778196208 is about 82329.8014573095. The cubic root of 6778196208 is about 1892.5094004176.

The spelling of 6778196208 in words is "six billion, seven hundred seventy-eight million, one hundred ninety-six thousand, two hundred eight".