13666041 has 6 divisors (see below), whose sum is σ = 19739850. Its totient is φ = 9110688.

The previous prime is 13666031. The next prime is 13666067. The reversal of 13666041 is 14066631.

13666041 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 13660416 + 5625 = 3696^2 + 75^2 .

It is not a de Polignac number, because 13666041 - 2¹³ = 13657849 is a prime.

It is a super-2 number, since 2×13666041² = 373521353227362, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 13665996 and 13666014.

It is not an unprimeable number, because it can be changed into a prime (13666021) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 759216 + ... + 759233.

It is an arithmetic number, because the mean of its divisors is an integer number (3289975).

Almost surely, 2^13666041 is an apocalyptic number.

It is an amenable number.

13666041 is a deficient number, since it is larger than the sum of its proper divisors (6073809).

13666041 is a wasteful number, since it uses less digits than its factorization.

13666041 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1518455 (or 1518452 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 27.

The square root of 13666041 is about 3696.7608794727. The cubic root of 13666041 is about 239.0823814556.

The spelling of 13666041 in words is "thirteen million, six hundred sixty-six thousand, forty-one".