668414163 has 4 divisors (see below), whose sum is σ = 891218888. Its totient is φ = 445609440.

The previous prime is 668414137. The next prime is 668414203. The reversal of 668414163 is 361414866.

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

It is not a de Polignac number, because 668414163 - 2⁹ = 668413651 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (668414563) 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 in 3 ways as a sum of consecutive naturals, for example, 111402358 + ... + 111402363.

It is an arithmetic number, because the mean of its divisors is an integer number (222804722).

Almost surely, 2^668414163 is an apocalyptic number.

668414163 is a deficient number, since it is larger than the sum of its proper divisors (222804725).

668414163 is a wasteful number, since it uses less digits than its factorization.

668414163 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 222804724.

The product of its digits is 82944, while the sum is 39.

The square root of 668414163 is about 25853.7069489077. The cubic root of 668414163 is about 874.3430881127.

The spelling of 668414163 in words is "six hundred sixty-eight million, four hundred fourteen thousand, one hundred sixty-three".