6779120685 has 24 divisors (see below), whose sum is σ = 11522166816. Its totient is φ = 3402850560.

The previous prime is 6779120659. The next prime is 6779120729. The reversal of 6779120685 is 5860219776.

It is not a de Polignac number, because 6779120685 - 2¹³ = 6779112493 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (51).

It is a congruent number.

It is an unprimeable number.

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 23 ways as a sum of consecutive naturals, for example, 777571 + ... + 786240.

It is an arithmetic number, because the mean of its divisors is an integer number (480090284).

Almost surely, 2^6779120685 is an apocalyptic number.

It is an amenable number.

6779120685 is a deficient number, since it is larger than the sum of its proper divisors (4743046131).

6779120685 is a wasteful number, since it uses less digits than its factorization.

6779120685 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1563853 (or 1563836 counting only the distinct ones).

The product of its (nonzero) digits is 1270080, while the sum is 51.

The square root of 6779120685 is about 82335.4157395224. The cubic root of 6779120685 is about 1892.5954361821.

The spelling of 6779120685 in words is "six billion, seven hundred seventy-nine million, one hundred twenty thousand, six hundred eighty-five".