6641171 has 4 divisors (see below), whose sum is σ = 6646344. Its totient is φ = 6636000.

The previous prime is 6641153. The next prime is 6641177. The reversal of 6641171 is 1711466.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 1711466 = 2 ⋅855733.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-6641171 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 6641171.

It is not an unprimeable number, because it can be changed into a prime (6641177) 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 3 ways as a sum of consecutive naturals, for example, 971 + ... + 3771.

It is an arithmetic number, because the mean of its divisors is an integer number (1661586).

Almost surely, 2^6641171 is an apocalyptic number.

6641171 is a deficient number, since it is larger than the sum of its proper divisors (5173).

6641171 is a wasteful number, since it uses less digits than its factorization.

6641171 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5172.

The product of its digits is 1008, while the sum is 26.

The square root of 6641171 is about 2577.0469533945. The cubic root of 6641171 is about 187.9669758652.

The spelling of 6641171 in words is "six million, six hundred forty-one thousand, one hundred seventy-one".