4171681 has 8 divisors (see below), whose sum is σ = 4441824. Its totient is φ = 3904320.

The previous prime is 4171667. The next prime is 4171691. The reversal of 4171681 is 1861714.

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 4171681 - 2¹⁹ = 3647393 is a prime.

It is a super-2 number, since 2×4171681² = 34805844731522, which contains 22 as substring.

It is a Duffinian number.

4171681 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (4171691) 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, 3006 + ... + 4168.

It is an arithmetic number, because the mean of its divisors is an integer number (555228).

Almost surely, 2^4171681 is an apocalyptic number.

It is an amenable number.

4171681 is a deficient number, since it is larger than the sum of its proper divisors (270143).

4171681 is a wasteful number, since it uses less digits than its factorization.

4171681 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1391.

The product of its digits is 1344, while the sum is 28.

The square root of 4171681 is about 2042.4693388152. The cubic root of 4171681 is about 160.9794220321.

The spelling of 4171681 in words is "four million, one hundred seventy-one thousand, six hundred eighty-one".