2666171 has 4 divisors (see below), whose sum is σ = 2700000. Its totient is φ = 2632344.

The previous prime is 2666141. The next prime is 2666177. The reversal of 2666171 is 1716662.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2666171 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2666177) 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, 16796 + ... + 16953.

It is an arithmetic number, because the mean of its divisors is an integer number (675000).

2^2666171 is an apocalyptic number.

2666171 is a deficient number, since it is larger than the sum of its proper divisors (33829).

2666171 is an equidigital number, since it uses as much as digits as its factorization.

2666171 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33828.

The product of its digits is 3024, while the sum is 29.

The square root of 2666171 is about 1632.8413885004. The cubic root of 2666171 is about 138.6636624359.

The spelling of 2666171 in words is "two million, six hundred sixty-six thousand, one hundred seventy-one".