66534163 has 2 divisors, whose sum is σ = 66534164. Its totient is φ = 66534162.

The previous prime is 66534161. The next prime is 66534203. The reversal of 66534163 is 36143566.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 66534163 - 2¹ = 66534161 is a prime.

It is a super-2 number, since 2×66534163² = 8853589692221138, which contains 22 as substring.

Together with 66534161, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (66534161) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33267081 + 33267082.

It is an arithmetic number, because the mean of its divisors is an integer number (33267082).

Almost surely, 2^66534163 is an apocalyptic number.

66534163 is a deficient number, since it is larger than the sum of its proper divisors (1).

66534163 is an equidigital number, since it uses as much as digits as its factorization.

66534163 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 38880, while the sum is 34.

The square root of 66534163 is about 8156.8476141215. The cubic root of 66534163 is about 405.2113168419.

It can be divided in two parts, 6653 and 4163, that added together give a square (10816 = 104²).

The spelling of 66534163 in words is "sixty-six million, five hundred thirty-four thousand, one hundred sixty-three".