66375163 has 2 divisors, whose sum is σ = 66375164. Its totient is φ = 66375162.

The previous prime is 66375161. The next prime is 66375173. The reversal of 66375163 is 36157366.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 66375163 - 2¹ = 66375161 is a prime.

Together with 66375161, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (66375161) 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, 33187581 + 33187582.

It is an arithmetic number, because the mean of its divisors is an integer number (33187582).

Almost surely, 2^66375163 is an apocalyptic number.

66375163 is a deficient number, since it is larger than the sum of its proper divisors (1).

66375163 is an equidigital number, since it uses as much as digits as its factorization.

66375163 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 68040, while the sum is 37.

The square root of 66375163 is about 8147.0953719715. The cubic root of 66375163 is about 404.8882748263. Note that the first 3 decimals are identical.

The spelling of 66375163 in words is "sixty-six million, three hundred seventy-five thousand, one hundred sixty-three".