41661685 has 8 divisors (see below), whose sum is σ = 53839800. Its totient is φ = 30765504.

The previous prime is 41661673. The next prime is 41661703. The reversal of 41661685 is 58616614.

It can be written as a sum of positive squares in 4 ways, for example, as 5769604 + 35892081 = 2402^2 + 5991^2 .

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-41661685 is a prime.

It is a congruent number.

It is an unprimeable number.

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 in 7 ways as a sum of consecutive naturals, for example, 320410 + ... + 320539.

It is an arithmetic number, because the mean of its divisors is an integer number (6729975).

Almost surely, 2^41661685 is an apocalyptic number.

It is an amenable number.

41661685 is a deficient number, since it is larger than the sum of its proper divisors (12178115).

41661685 is a wasteful number, since it uses less digits than its factorization.

41661685 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 640967.

The product of its digits is 34560, while the sum is 37.

The square root of 41661685 is about 6454.5863539037. The cubic root of 41661685 is about 346.6668202457. Note that the first 3 decimals are identical.

The spelling of 41661685 in words is "forty-one million, six hundred sixty-one thousand, six hundred eighty-five".