6669171 has 24 divisors (see below), whose sum is σ = 10387520. Its totient is φ = 4109616.

The previous prime is 6669163. The next prime is 6669197. The reversal of 6669171 is 1719666.

It is not a de Polignac number, because 6669171 - 2³ = 6669163 is a prime.

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

It is a Duffinian number.

Its product of digits (13608) is a multiple of the sum of its prime divisors (972).

6669171 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (6669121) 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 23 ways as a sum of consecutive naturals, for example, 6900 + ... + 7806.

Almost surely, 2^6669171 is an apocalyptic number.

6669171 is a deficient number, since it is larger than the sum of its proper divisors (3718349).

6669171 is a wasteful number, since it uses less digits than its factorization.

6669171 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 975 (or 972 counting only the distinct ones).

The product of its digits is 13608, while the sum is 36.

The square root of 6669171 is about 2582.4738140008. The cubic root of 6669171 is about 188.2307695048.

The spelling of 6669171 in words is "six million, six hundred sixty-nine thousand, one hundred seventy-one".