41688665 has 8 divisors (see below), whose sum is σ = 50119560. Its totient is φ = 33288832.

The previous prime is 41688653. The next prime is 41688667. The reversal of 41688665 is 56688614.

It can be written as a sum of positive squares in 4 ways, for example, as 3545689 + 38142976 = 1883^2 + 6176^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 41688665 - 2⁴ = 41688649 is a prime.

It is not an unprimeable number, because it can be changed into a prime (41688667) 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, 4700 + ... + 10269.

It is an arithmetic number, because the mean of its divisors is an integer number (6264945).

Almost surely, 2^41688665 is an apocalyptic number.

It is an amenable number.

41688665 is a deficient number, since it is larger than the sum of its proper divisors (8430895).

41688665 is a wasteful number, since it uses less digits than its factorization.

41688665 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15531.

The product of its digits is 276480, while the sum is 44.

The square root of 41688665 is about 6456.6760024025. The cubic root of 41688665 is about 346.7416376110.

The spelling of 41688665 in words is "forty-one million, six hundred eighty-eight thousand, six hundred sixty-five".