6776784 has 140 divisors (see below), whose sum is σ = 22769376. Its totient is φ = 1912896.

The previous prime is 6776779. The next prime is 6776813. The reversal of 6776784 is 4876776.

It is a nude number because it is divisible by every one of its digits.

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 27 ways as a sum of consecutive naturals, for example, 81607 + ... + 81689.

Almost surely, 2^6776784 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 6776784, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (11384688).

6776784 is an abundant number, since it is smaller than the sum of its proper divisors (15992592).

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

6776784 is an equidigital number, since it uses as much as digits as its factorization.

6776784 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 116 (or 95 counting only the distinct ones).

The product of its digits is 395136, while the sum is 45.

The square root of 6776784 is about 2603.2256913299. The cubic root of 6776784 is about 189.2377959227.

The spelling of 6776784 in words is "six million, seven hundred seventy-six thousand, seven hundred eighty-four".