41661665 has 8 divisors (see below), whose sum is σ = 50035968. Its totient is φ = 33301360.

The previous prime is 41661649. The next prime is 41661673. The reversal of 41661665 is 56616614.

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

It is not a de Polignac number, because 41661665 - 2⁴ = 41661649 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4880 + ... + 10350.

It is an arithmetic number, because the mean of its divisors is an integer number (6254496).

Almost surely, 2^41661665 is an apocalyptic number.

It is an amenable number.

41661665 is a deficient number, since it is larger than the sum of its proper divisors (8374303).

41661665 is a wasteful number, since it uses less digits than its factorization.

41661665 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6999.

The product of its digits is 25920, while the sum is 35.

The square root of 41661665 is about 6454.5848046176. The cubic root of 41661665 is about 346.6667647723. Note that the first 3 decimals are identical.

The spelling of 41661665 in words is "forty-one million, six hundred sixty-one thousand, six hundred sixty-five".