6660171 has 32 divisors (see below), whose sum is σ = 11404800. Its totient is φ = 3762720.

The previous prime is 6660161. The next prime is 6660191. The reversal of 6660171 is 1710666.

It is a de Polignac number, because none of the positive numbers 2^k-6660171 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

6660171 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (6660161) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 24625 + ... + 24893.

It is an arithmetic number, because the mean of its divisors is an integer number (356400).

Almost surely, 2^6660171 is an apocalyptic number.

6660171 is a deficient number, since it is larger than the sum of its proper divisors (4744629).

6660171 is a wasteful number, since it uses less digits than its factorization.

6660171 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 416 (or 410 counting only the distinct ones).

The product of its (nonzero) digits is 1512, while the sum is 27.

The square root of 6660171 is about 2580.7307104772. The cubic root of 6660171 is about 188.1460593489.

The spelling of 6660171 in words is "six million, six hundred sixty thousand, one hundred seventy-one".