6665171 has 8 divisors (see below), whose sum is σ = 6827760. Its totient is φ = 6504352.

The previous prime is 6665167. The next prime is 6665179. The reversal of 6665171 is 1715666.

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 6665171 - 2² = 6665167 is a prime.

It is a super-3 number, since 3×6665171³ (a number of 21 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6665179) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9881 + ... + 10533.

It is an arithmetic number, because the mean of its divisors is an integer number (853470).

Almost surely, 2^6665171 is an apocalyptic number.

6665171 is a deficient number, since it is larger than the sum of its proper divisors (162589).

6665171 is a wasteful number, since it uses less digits than its factorization.

6665171 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 885.

The product of its digits is 7560, while the sum is 32.

The square root of 6665171 is about 2581.6992466203. The cubic root of 6665171 is about 188.1931299613.

The spelling of 6665171 in words is "six million, six hundred sixty-five thousand, one hundred seventy-one".