6391105 has 8 divisors (see below), whose sum is σ = 8764992. Its totient is φ = 4382448.

The previous prime is 6391093. The next prime is 6391117. The reversal of 6391105 is 5011936.

It is an interprime number because it is at equal distance from previous prime (6391093) and next prime (6391117).

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

It is a de Polignac number, because none of the positive numbers 2^k-6391105 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 6391105.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 91267 + ... + 91336.

It is an arithmetic number, because the mean of its divisors is an integer number (1095624).

Almost surely, 2^6391105 is an apocalyptic number.

It is an amenable number.

6391105 is a deficient number, since it is larger than the sum of its proper divisors (2373887).

6391105 is a wasteful number, since it uses less digits than its factorization.

6391105 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 182615.

The product of its (nonzero) digits is 810, while the sum is 25.

The square root of 6391105 is about 2528.0634881268. The cubic root of 6391105 is about 185.5774990218.

The spelling of 6391105 in words is "six million, three hundred ninety-one thousand, one hundred five".