66018163 has 2 divisors, whose sum is σ = 66018164. Its totient is φ = 66018162.

The previous prime is 66018149. The next prime is 66018263. The reversal of 66018163 is 36181066.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 66018163 - 2⁵ = 66018131 is a prime.

It is not a weakly prime, because it can be changed into another prime (66018263) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33009081 + 33009082.

It is an arithmetic number, because the mean of its divisors is an integer number (33009082).

Almost surely, 2^66018163 is an apocalyptic number.

66018163 is a deficient number, since it is larger than the sum of its proper divisors (1).

66018163 is an equidigital number, since it uses as much as digits as its factorization.

66018163 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5184, while the sum is 31.

The square root of 66018163 is about 8125.1561831143. The cubic root of 66018163 is about 404.1610698957.

The spelling of 66018163 in words is "sixty-six million, eighteen thousand, one hundred sixty-three".