6391197 has 16 divisors (see below), whose sum is σ = 9612480. Its totient is φ = 4196016.

The previous prime is 6391193. The next prime is 6391199. The reversal of 6391197 is 7911936.

6391197 is a `hidden beast` number, since 639 + 1 + 19 + 7 = 666.

It is not a de Polignac number, because 6391197 - 2² = 6391193 is a prime.

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6391193) 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 15 ways as a sum of consecutive naturals, for example, 43 + ... + 3575.

It is an arithmetic number, because the mean of its divisors is an integer number (600780).

Almost surely, 2^6391197 is an apocalyptic number.

6391197 is a gapful number since it is divisible by the number (67) formed by its first and last digit.

It is an amenable number.

6391197 is a deficient number, since it is larger than the sum of its proper divisors (3221283).

6391197 is a wasteful number, since it uses less digits than its factorization.

6391197 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3609 (or 3603 counting only the distinct ones).

The product of its digits is 10206, while the sum is 36.

The square root of 6391197 is about 2528.0816838069. The cubic root of 6391197 is about 185.5783894806.

The spelling of 6391197 in words is "six million, three hundred ninety-one thousand, one hundred ninety-seven".