6780287 has 16 divisors (see below), whose sum is σ = 7387200. Its totient is φ = 6209280.

The previous prime is 6780271. The next prime is 6780299. The reversal of 6780287 is 7820876.

6780287 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 6780287 - 2⁴ = 6780271 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 6780287.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6780217) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 76139 + ... + 76227.

It is an arithmetic number, because the mean of its divisors is an integer number (461700).

Almost surely, 2^6780287 is an apocalyptic number.

6780287 is a deficient number, since it is larger than the sum of its proper divisors (606913).

6780287 is a wasteful number, since it uses less digits than its factorization.

6780287 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 226.

The product of its (nonzero) digits is 37632, while the sum is 38.

The square root of 6780287 is about 2603.8984235181. The cubic root of 6780287 is about 189.2703967262.

The spelling of 6780287 in words is "six million, seven hundred eighty thousand, two hundred eighty-seven".