4171661 has 8 divisors (see below), whose sum is σ = 4515840. Its totient is φ = 3830832.

The previous prime is 4171633. The next prime is 4171667. The reversal of 4171661 is 1661714.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-4171661 is a prime.

It is a super-3 number, since 3×4171661³ (a number of 21 digits) contains 333 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 4171661.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4171667) 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, 2180 + ... + 3618.

It is an arithmetic number, because the mean of its divisors is an integer number (564480).

Almost surely, 2^4171661 is an apocalyptic number.

It is an amenable number.

4171661 is a deficient number, since it is larger than the sum of its proper divisors (344179).

4171661 is a wasteful number, since it uses less digits than its factorization.

4171661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1675.

The product of its digits is 1008, while the sum is 26.

The square root of 4171661 is about 2042.4644427750. The cubic root of 4171661 is about 160.9791647742.

The spelling of 4171661 in words is "four million, one hundred seventy-one thousand, six hundred sixty-one".