6586991 has 2 divisors, whose sum is σ = 6586992. Its totient is φ = 6586990.

The previous prime is 6586961. The next prime is 6586997. The reversal of 6586991 is 1996856.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 6586991 - 2⁶ = 6586927 is a prime.

It is an Ulam number.

It is a plaindrome in base 12.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6586997) 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, 3293495 + 3293496.

It is an arithmetic number, because the mean of its divisors is an integer number (3293496).

Almost surely, 2^6586991 is an apocalyptic number.

6586991 is a deficient number, since it is larger than the sum of its proper divisors (1).

6586991 is an equidigital number, since it uses as much as digits as its factorization.

6586991 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 116640, while the sum is 44.

The square root of 6586991 is about 2566.5133936919. The cubic root of 6586991 is about 187.4544221069.

The spelling of 6586991 in words is "six million, five hundred eighty-six thousand, nine hundred ninety-one".