66182689 has 2 divisors, whose sum is σ = 66182690. Its totient is φ = 66182688.

The previous prime is 66182657. The next prime is 66182713. The reversal of 66182689 is 98628166.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 60326289 + 5856400 = 7767^2 + 2420^2 .

It is a cyclic number.

It is not a de Polignac number, because 66182689 - 2⁵ = 66182657 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (66182629) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33091344 + 33091345.

It is an arithmetic number, because the mean of its divisors is an integer number (33091345).

Almost surely, 2^66182689 is an apocalyptic number.

It is an amenable number.

66182689 is a deficient number, since it is larger than the sum of its proper divisors (1).

66182689 is an equidigital number, since it uses as much as digits as its factorization.

66182689 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 248832, while the sum is 46.

The square root of 66182689 is about 8135.2743653794. The cubic root of 66182689 is about 404.4965323371.

The spelling of 66182689 in words is "sixty-six million, one hundred eighty-two thousand, six hundred eighty-nine".