6779804805 has 12 divisors (see below), whose sum is σ = 11751661740. Its totient is φ = 3615895872.

The previous prime is 6779804803. The next prime is 6779804819. The reversal of 6779804805 is 5084089776.

6779804805 is a `hidden beast` number, since 6 + 77 + 98 + 0 + 480 + 5 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 4010308929 + 2769495876 = 63327^2 + 52626^2 .

It is not a de Polignac number, because 6779804805 - 2¹ = 6779804803 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6779804803) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 75331120 + ... + 75331209.

It is an arithmetic number, because the mean of its divisors is an integer number (979305145).

Almost surely, 2^6779804805 is an apocalyptic number.

It is an amenable number.

6779804805 is a deficient number, since it is larger than the sum of its proper divisors (4971856935).

6779804805 is a wasteful number, since it uses less digits than its factorization.

6779804805 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 150662340 (or 150662337 counting only the distinct ones).

The product of its (nonzero) digits is 3386880, while the sum is 54.

The square root of 6779804805 is about 82339.5701045372. The cubic root of 6779804805 is about 1892.6590982654.

The spelling of 6779804805 in words is "six billion, seven hundred seventy-nine million, eight hundred four thousand, eight hundred five".