2006656171 has 8 divisors (see below), whose sum is σ = 2161573344. Its totient is φ = 1851818880.

The previous prime is 2006656163. The next prime is 2006656207. The reversal of 2006656171 is 1716566002.

It is a happy number.

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 2006656171 - 2³ = 2006656163 is a prime.

It is a super-2 number, since 2×2006656171² = 8053337977224762482, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2006656121) 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, 38586 + ... + 74176.

It is an arithmetic number, because the mean of its divisors is an integer number (270196668).

Almost surely, 2^2006656171 is an apocalyptic number.

2006656171 is a deficient number, since it is larger than the sum of its proper divisors (154917173).

2006656171 is a wasteful number, since it uses less digits than its factorization.

2006656171 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39941.

The product of its (nonzero) digits is 15120, while the sum is 34.

The square root of 2006656171 is about 44795.7159893667. The cubic root of 2006656171 is about 1261.3172105169.

The spelling of 2006656171 in words is "two billion, six million, six hundred fifty-six thousand, one hundred seventy-one".