2016666671 has 4 divisors (see below), whose sum is σ = 2021346144. Its totient is φ = 2011987200.

The previous prime is 2016666629. The next prime is 2016666689. The reversal of 2016666671 is 1766666102.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1766666102 = 2 ⋅883333051.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2016666671 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2016666601) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2339090 + ... + 2339951.

It is an arithmetic number, because the mean of its divisors is an integer number (505336536).

Almost surely, 2^2016666671 is an apocalyptic number.

2016666671 is a deficient number, since it is larger than the sum of its proper divisors (4679473).

2016666671 is an equidigital number, since it uses as much as digits as its factorization.

2016666671 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4679472.

The product of its (nonzero) digits is 108864, while the sum is 41.

The square root of 2016666671 is about 44907.3119992725. The cubic root of 2016666671 is about 1263.4111546399.

The spelling of 2016666671 in words is "two billion, sixteen million, six hundred sixty-six thousand, six hundred seventy-one".