6605191 has 2 divisors, whose sum is σ = 6605192. Its totient is φ = 6605190.

The previous prime is 6605171. The next prime is 6605219. The reversal of 6605191 is 1915066.

It is an a-pointer prime, because the next prime (6605219) can be obtained adding 6605191 to its sum of digits (28).

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 6605191 - 2¹³ = 6596999 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6605171) 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 as a sum of consecutive naturals, namely, 3302595 + 3302596.

It is an arithmetic number, because the mean of its divisors is an integer number (3302596).

Almost surely, 2^6605191 is an apocalyptic number.

6605191 is a deficient number, since it is larger than the sum of its proper divisors (1).

6605191 is an equidigital number, since it uses as much as digits as its factorization.

6605191 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1620, while the sum is 28.

The square root of 6605191 is about 2570.0566141624. The cubic root of 6605191 is about 187.6269102290.

The spelling of 6605191 in words is "six million, six hundred five thousand, one hundred ninety-one".