66330041 has 2 divisors, whose sum is σ = 66330042. Its totient is φ = 66330040.

The previous prime is 66330023. The next prime is 66330109. The reversal of 66330041 is 14003366.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 65934400 + 395641 = 8120^2 + 629^2 .

It is a cyclic number.

It is not a de Polignac number, because 66330041 - 2¹⁰ = 66329017 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 66329989 and 66330016.

It is not a weakly prime, because it can be changed into another prime (66330001) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33165020 + 33165021.

It is an arithmetic number, because the mean of its divisors is an integer number (33165021).

Almost surely, 2^66330041 is an apocalyptic number.

It is an amenable number.

66330041 is a deficient number, since it is larger than the sum of its proper divisors (1).

66330041 is an equidigital number, since it uses as much as digits as its factorization.

66330041 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1296, while the sum is 23.

The square root of 66330041 is about 8144.3256933892. The cubic root of 66330041 is about 404.7965060113.

The spelling of 66330041 in words is "sixty-six million, three hundred thirty thousand, forty-one".