2066906871 has 12 divisors (see below), whose sum is σ = 3014519248. Its totient is φ = 1364559264.

The previous prime is 2066906867. The next prime is 2066906873. The reversal of 2066906871 is 1786096602.

It is not a de Polignac number, because 2066906871 - 2² = 2066906867 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 (2066906873) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1113910 + ... + 1115763.

Almost surely, 2^2066906871 is an apocalyptic number.

2066906871 is a deficient number, since it is larger than the sum of its proper divisors (947612377).

2066906871 is a wasteful number, since it uses less digits than its factorization.

2066906871 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2229782 (or 2229779 counting only the distinct ones).

The product of its (nonzero) digits is 217728, while the sum is 45.

The square root of 2066906871 is about 45463.2474752959. The cubic root of 2066906871 is about 1273.8167920500.

The spelling of 2066906871 in words is "two billion, sixty-six million, nine hundred six thousand, eight hundred seventy-one".