41661 has 8 divisors (see below), whose sum is σ = 61760. Its totient is φ = 27756.

The previous prime is 41659. The next prime is 41669. The reversal of 41661 is 16614.

41661 is a `hidden beast` number, since 4 + 1 + 661 = 666.

It is not a de Polignac number, because 41661 - 2¹ = 41659 is a prime.

It is a Duffinian number.

It is a plaindrome in base 14.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (41669) 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, 745 + ... + 798.

It is an arithmetic number, because the mean of its divisors is an integer number (7720).

2⁴¹⁶⁶¹ is an apocalyptic number.

It is an amenable number.

41661 is a deficient number, since it is larger than the sum of its proper divisors (20099).

41661 is a wasteful number, since it uses less digits than its factorization.

41661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1552 (or 1546 counting only the distinct ones).

The product of its digits is 144, while the sum is 18.

The square root of 41661 is about 204.1102643181. The cubic root of 41661 is about 34.6664920274. Note that the first 3 decimals are identical.

The spelling of 41661 in words is "forty-one thousand, six hundred sixty-one".