6782840 has 32 divisors (see below), whose sum is σ = 15677280. Its totient is φ = 2639232.

The previous prime is 6782833. The next prime is 6782869. The reversal of 6782840 is 482876.

It is a self number, because there is not a number n which added to its sum of digits gives 6782840.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 812 + ... + 3771.

It is an arithmetic number, because the mean of its divisors is an integer number (489915).

Almost surely, 2^6782840 is an apocalyptic number.

It is an amenable number.

6782840 is an abundant number, since it is smaller than the sum of its proper divisors (8894440).

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

6782840 is a wasteful number, since it uses less digits than its factorization.

6782840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4631 (or 4627 counting only the distinct ones).

The product of its (nonzero) digits is 21504, while the sum is 35.

The square root of 6782840 is about 2604.3886038762. The cubic root of 6782840 is about 189.2941492452.

The spelling of 6782840 in words is "six million, seven hundred eighty-two thousand, eight hundred forty".