66663163 has 8 divisors (see below), whose sum is σ = 76264928. Its totient is φ = 57081024.

The previous prime is 66663143. The next prime is 66663173. The reversal of 66663163 is 36136666.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 66663163 - 2²¹ = 64566011 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (66663133) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3295 + ... + 12007.

It is an arithmetic number, because the mean of its divisors is an integer number (9533116).

Almost surely, 2^66663163 is an apocalyptic number.

66663163 is a deficient number, since it is larger than the sum of its proper divisors (9601765).

66663163 is a wasteful number, since it uses less digits than its factorization.

66663163 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9813.

The product of its digits is 69984, while the sum is 37.

The square root of 66663163 is about 8164.7512515691. The cubic root of 66663163 is about 405.4730295777.

The spelling of 66663163 in words is "sixty-six million, six hundred sixty-three thousand, one hundred sixty-three".