6391063 has 8 divisors (see below), whose sum is σ = 7413632. Its totient is φ = 5395896.

The previous prime is 6391061. The next prime is 6391069. The reversal of 6391063 is 3601936.

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

It is a cyclic number.

It is not a de Polignac number, because 6391063 - 2¹ = 6391061 is a prime.

It is an Ulam number.

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 polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6345 + ... + 7282.

It is an arithmetic number, because the mean of its divisors is an integer number (926704).

Almost surely, 2^6391063 is an apocalyptic number.

6391063 is a deficient number, since it is larger than the sum of its proper divisors (1022569).

6391063 is a wasteful number, since it uses less digits than its factorization.

6391063 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13701.

The product of its (nonzero) digits is 2916, while the sum is 28.

The square root of 6391063 is about 2528.0551813598. The cubic root of 6391063 is about 185.5770925051.

Adding to 6391063 its reverse (3601936), we get a palindrome (9992999).

The spelling of 6391063 in words is "six million, three hundred ninety-one thousand, sixty-three".