6781347 has 16 divisors (see below), whose sum is σ = 10576000. Its totient is φ = 4282632.

The previous prime is 6781337. The next prime is 6781381. The reversal of 6781347 is 7431876.

It is not a de Polignac number, because 6781347 - 2⁸ = 6781091 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6781337) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6097 + ... + 7122.

It is an arithmetic number, because the mean of its divisors is an integer number (661000).

Almost surely, 2^6781347 is an apocalyptic number.

6781347 is a deficient number, since it is larger than the sum of its proper divisors (3794653).

6781347 is a wasteful number, since it uses less digits than its factorization.

6781347 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13247 (or 13241 counting only the distinct ones).

The product of its digits is 28224, while the sum is 36.

The square root of 6781347 is about 2604.1019565294. The cubic root of 6781347 is about 189.2802594437.

It can be divided in two parts, 678 and 1347, that added together give a square (2025 = 45²).

The spelling of 6781347 in words is "six million, seven hundred eighty-one thousand, three hundred forty-seven".