66559041 has 12 divisors (see below), whose sum is σ = 98739732. Its totient is φ = 43173216.

The previous prime is 66559039. The next prime is 66559057. The reversal of 66559041 is 14095566.

66559041 is a `hidden beast` number, since 6 + 65 + 590 + 4 + 1 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 62964225 + 3594816 = 7935^2 + 1896^2 .

It is not a de Polignac number, because 66559041 - 2¹ = 66559039 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 66558987 and 66559005.

It is not an unprimeable number, because it can be changed into a prime (66559061) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 99606 + ... + 100271.

It is an arithmetic number, because the mean of its divisors is an integer number (8228311).

Almost surely, 2^66559041 is an apocalyptic number.

It is an amenable number.

66559041 is a deficient number, since it is larger than the sum of its proper divisors (32180691).

66559041 is a wasteful number, since it uses less digits than its factorization.

66559041 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 199920 (or 199917 counting only the distinct ones).

The product of its (nonzero) digits is 32400, while the sum is 36.

The square root of 66559041 is about 8158.3724479825. The cubic root of 66559041 is about 405.2618151648.

The spelling of 66559041 in words is "sixty-six million, five hundred fifty-nine thousand, forty-one".