66441163 has 4 divisors (see below), whose sum is σ = 66458440. Its totient is φ = 66423888.

The previous prime is 66441143. The next prime is 66441173. The reversal of 66441163 is 36114466.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-66441163 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (66441103) 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 in 3 ways as a sum of consecutive naturals, for example, 31 + ... + 11527.

It is an arithmetic number, because the mean of its divisors is an integer number (16614610).

Almost surely, 2^66441163 is an apocalyptic number.

66441163 is a deficient number, since it is larger than the sum of its proper divisors (17277).

66441163 is a wasteful number, since it uses less digits than its factorization.

66441163 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17276.

The product of its digits is 10368, while the sum is 31.

The square root of 66441163 is about 8151.1448889098. The cubic root of 66441163 is about 405.0224302976.

The spelling of 66441163 in words is "sixty-six million, four hundred forty-one thousand, one hundred sixty-three".