66100163 has 4 divisors (see below), whose sum is σ = 66389040. Its totient is φ = 65811288.

The previous prime is 66100117. The next prime is 66100187. The reversal of 66100163 is 36100166.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 66100163 - 2¹⁰ = 66099139 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (66160163) 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, 144095 + ... + 144552.

It is an arithmetic number, because the mean of its divisors is an integer number (16597260).

Almost surely, 2^66100163 is an apocalyptic number.

66100163 is a deficient number, since it is larger than the sum of its proper divisors (288877).

66100163 is a wasteful number, since it uses less digits than its factorization.

66100163 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 288876.

The product of its (nonzero) digits is 648, while the sum is 23.

The square root of 66100163 is about 8130.2006740301. The cubic root of 66100163 is about 404.3283344499.

The spelling of 66100163 in words is "sixty-six million, one hundred thousand, one hundred sixty-three".