13665141 has 24 divisors (see below), whose sum is σ = 23289344. Its totient is φ = 7555680.

The previous prime is 13665133. The next prime is 13665143. The reversal of 13665141 is 14156631.

13665141 = 135² + 136² + ... + 351².

13665141 is a `hidden beast` number, since 1 + 3 + 6 + 651 + 4 + 1 = 666.

It is not a de Polignac number, because 13665141 - 2³ = 13665133 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13665143) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1546 + ... + 5451.

Almost surely, 2^13665141 is an apocalyptic number.

It is an amenable number.

13665141 is a deficient number, since it is larger than the sum of its proper divisors (9624203).

13665141 is a wasteful number, since it uses less digits than its factorization.

13665141 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7041 (or 7038 counting only the distinct ones).

The product of its digits is 2160, while the sum is 27.

The square root of 13665141 is about 3696.6391492814. The cubic root of 13665141 is about 239.0771329503.

The spelling of 13665141 in words is "thirteen million, six hundred sixty-five thousand, one hundred forty-one".