66116041 has 2 divisors, whose sum is σ = 66116042. Its totient is φ = 66116040.

The previous prime is 66116023. The next prime is 66116047. The reversal of 66116041 is 14061166.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 43837641 + 22278400 = 6621^2 + 4720^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-66116041 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 66115997 and 66116015.

It is not a weakly prime, because it can be changed into another prime (66116047) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33058020 + 33058021.

It is an arithmetic number, because the mean of its divisors is an integer number (33058021).

Almost surely, 2^66116041 is an apocalyptic number.

It is an amenable number.

66116041 is a deficient number, since it is larger than the sum of its proper divisors (1).

66116041 is an equidigital number, since it uses as much as digits as its factorization.

66116041 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 864, while the sum is 25.

The square root of 66116041 is about 8131.1770980591. The cubic root of 66116041 is about 404.3607065906.

The spelling of 66116041 in words is "sixty-six million, one hundred sixteen thousand, forty-one".