41866681 has 2 divisors, whose sum is σ = 41866682. Its totient is φ = 41866680.

The previous prime is 41866663. The next prime is 41866703. The reversal of 41866681 is 18666814.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 30415225 + 11451456 = 5515^2 + 3384^2 .

It is a cyclic number.

It is not a de Polignac number, because 41866681 - 2⁷ = 41866553 is a prime.

It is a super-2 number, since 2×41866681² = 3505637955911522, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (41866081) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20933340 + 20933341.

It is an arithmetic number, because the mean of its divisors is an integer number (20933341).

Almost surely, 2^41866681 is an apocalyptic number.

It is an amenable number.

41866681 is a deficient number, since it is larger than the sum of its proper divisors (1).

41866681 is an equidigital number, since it uses as much as digits as its factorization.

41866681 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 55296, while the sum is 40.

The square root of 41866681 is about 6470.4467388272. The cubic root of 41866681 is about 347.2344806775.

The spelling of 41866681 in words is "forty-one million, eight hundred sixty-six thousand, six hundred eighty-one".