6581166 has 8 divisors (see below), whose sum is σ = 13162344. Its totient is φ = 2193720.

The previous prime is 6581161. The next prime is 6581171. The reversal of 6581166 is 6611856.

It is an interprime number because it is at equal distance from previous prime (6581161) and next prime (6581171).

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

6581166 is an admirable number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6581161) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 548425 + ... + 548436.

It is an arithmetic number, because the mean of its divisors is an integer number (1645293).

Almost surely, 2^6581166 is an apocalyptic number.

6581166 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

6581166 is a wasteful number, since it uses less digits than its factorization.

6581166 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1096866.

The product of its digits is 8640, while the sum is 33.

The square root of 6581166 is about 2565.3783346711. The cubic root of 6581166 is about 187.3991493207.

The spelling of 6581166 in words is "six million, five hundred eighty-one thousand, one hundred sixty-six".