6781448 has 8 divisors (see below), whose sum is σ = 12715230. Its totient is φ = 3390720.

The previous prime is 6781433. The next prime is 6781457. The reversal of 6781448 is 8441876.

6781448 is digitally balanced in base 5, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 4937284 + 1844164 = 2222^2 + 1358^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a nialpdrome in base 14.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 423833 + ... + 423848.

Almost surely, 2^6781448 is an apocalyptic number.

It is an amenable number.

6781448 is a deficient number, since it is larger than the sum of its proper divisors (5933782).

6781448 is a wasteful number, since it uses less digits than its factorization.

6781448 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 847687 (or 847683 counting only the distinct ones).

The product of its digits is 43008, while the sum is 38.

The square root of 6781448 is about 2604.1213489390. The cubic root of 6781448 is about 189.2811991396.

The spelling of 6781448 in words is "six million, seven hundred eighty-one thousand, four hundred forty-eight".