6391071 has 6 divisors (see below), whose sum is σ = 9231560. Its totient is φ = 4260708.

The previous prime is 6391069. The next prime is 6391093. The reversal of 6391071 is 1701936.

It is not a de Polignac number, because 6391071 - 2¹ = 6391069 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6391061) by changing a digit.

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 in 5 ways as a sum of consecutive naturals, for example, 355051 + ... + 355068.

Almost surely, 2^6391071 is an apocalyptic number.

6391071 is a deficient number, since it is larger than the sum of its proper divisors (2840489).

6391071 is a wasteful number, since it uses less digits than its factorization.

6391071 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 710125 (or 710122 counting only the distinct ones).

The product of its (nonzero) digits is 1134, while the sum is 27.

The square root of 6391071 is about 2528.0567636032. The cubic root of 6391071 is about 185.5771699370.

The spelling of 6391071 in words is "six million, three hundred ninety-one thousand, seventy-one".