6591091 has 8 divisors (see below), whose sum is σ = 7343280. Its totient is φ = 5873952.

The previous prime is 6591089. The next prime is 6591163. The reversal of 6591091 is 1901956.

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 6591091 - 2¹ = 6591089 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6591031) 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 7 ways as a sum of consecutive naturals, for example, 8365 + ... + 9118.

It is an arithmetic number, because the mean of its divisors is an integer number (917910).

Almost surely, 2^6591091 is an apocalyptic number.

6591091 is a deficient number, since it is larger than the sum of its proper divisors (752189).

6591091 is a wasteful number, since it uses less digits than its factorization.

6591091 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17525.

The product of its (nonzero) digits is 2430, while the sum is 31.

The square root of 6591091 is about 2567.3120184348. The cubic root of 6591091 is about 187.4933070204.

The spelling of 6591091 in words is "six million, five hundred ninety-one thousand, ninety-one".