6778591349 has 8 divisors (see below), whose sum is σ = 7074673152. Its totient is φ = 6482622960.

The previous prime is 6778591333. The next prime is 6778591387. The reversal of 6778591349 is 9431958776.

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 6778591349 - 2⁴ = 6778591333 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6778591319) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 107747 + ... + 158639.

It is an arithmetic number, because the mean of its divisors is an integer number (884334144).

Almost surely, 2^6778591349 is an apocalyptic number.

It is an amenable number.

6778591349 is a deficient number, since it is larger than the sum of its proper divisors (296081803).

6778591349 is a wasteful number, since it uses less digits than its factorization.

6778591349 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56707.

The product of its digits is 11430720, while the sum is 59.

The square root of 6778591349 is about 82332.2011669796. The cubic root of 6778591349 is about 1892.5461748781.

The spelling of 6778591349 in words is "six billion, seven hundred seventy-eight million, five hundred ninety-one thousand, three hundred forty-nine".