6391347 has 8 divisors (see below), whose sum is σ = 8541120. Its totient is φ = 4251240.

The previous prime is 6391327. The next prime is 6391373. The reversal of 6391347 is 7431936.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 6391347 - 2¹⁶ = 6325811 is a prime.

It is an Ulam number.

It is a zygodrome in base 2.

It is not an unprimeable number, because it can be changed into a prime (6391327) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 697 + ... + 3642.

It is an arithmetic number, because the mean of its divisors is an integer number (1067640).

Almost surely, 2^6391347 is an apocalyptic number.

6391347 is a deficient number, since it is larger than the sum of its proper divisors (2149773).

6391347 is a wasteful number, since it uses less digits than its factorization.

6391347 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4833.

The product of its digits is 13608, while the sum is 33.

The square root of 6391347 is about 2528.1113503958. Note that the first 3 decimals coincide. The cubic root of 6391347 is about 185.5798412974.

The spelling of 6391347 in words is "six million, three hundred ninety-one thousand, three hundred forty-seven".