66000163 has 4 divisors (see below), whose sum is σ = 66047968. Its totient is φ = 65952360.

The previous prime is 66000157. The next prime is 66000169. The reversal of 66000163 is 36100066.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 36100066 = 2 ⋅18050033.

It is an interprime number because it is at equal distance from previous prime (66000157) and next prime (66000169).

It is a cyclic number.

It is not a de Polignac number, because 66000163 - 2¹⁷ = 65869091 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (66000169) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 21768 + ... + 24613.

It is an arithmetic number, because the mean of its divisors is an integer number (16511992).

Almost surely, 2^66000163 is an apocalyptic number.

66000163 is a deficient number, since it is larger than the sum of its proper divisors (47805).

66000163 is a wasteful number, since it uses less digits than its factorization.

66000163 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47804.

The product of its (nonzero) digits is 648, while the sum is 22.

The square root of 66000163 is about 8124.0484365863. The cubic root of 66000163 is about 404.1243347499.

The spelling of 66000163 in words is "sixty-six million, one hundred sixty-three", and thus it is an aban number.