6781903 has 4 divisors (see below), whose sum is σ = 6789040. Its totient is φ = 6774768.

The previous prime is 6781897. The next prime is 6781939. The reversal of 6781903 is 3091876.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 6781903 - 2⁹ = 6781391 is a prime.

It is a Duffinian number.

It is a plaindrome in base 16.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6781303) 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 3 ways as a sum of consecutive naturals, for example, 1875 + ... + 4132.

It is an arithmetic number, because the mean of its divisors is an integer number (1697260).

Almost surely, 2^6781903 is an apocalyptic number.

6781903 is a deficient number, since it is larger than the sum of its proper divisors (7137).

6781903 is a wasteful number, since it uses less digits than its factorization.

6781903 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7136.

The product of its (nonzero) digits is 9072, while the sum is 34.

The square root of 6781903 is about 2604.2087089940. The cubic root of 6781903 is about 189.2854323073.

The spelling of 6781903 in words is "six million, seven hundred eighty-one thousand, nine hundred three".