66485183 has 2 divisors, whose sum is σ = 66485184. Its totient is φ = 66485182.

The previous prime is 66485179. The next prime is 66485201. The reversal of 66485183 is 38158466.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 66485183 - 2² = 66485179 is a prime.

It is a Sophie Germain prime.

It is a self number, because there is not a number n which added to its sum of digits gives 66485183.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (66455183) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33242591 + 33242592.

It is an arithmetic number, because the mean of its divisors is an integer number (33242592).

Almost surely, 2^66485183 is an apocalyptic number.

66485183 is a deficient number, since it is larger than the sum of its proper divisors (1).

66485183 is an equidigital number, since it uses as much as digits as its factorization.

66485183 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 138240, while the sum is 41.

The square root of 66485183 is about 8153.8446759795. The cubic root of 66485183 is about 405.1118585502. Note that the first 3 decimals are identical.

The spelling of 66485183 in words is "sixty-six million, four hundred eighty-five thousand, one hundred eighty-three".