667321163 has 2 divisors, whose sum is σ = 667321164. Its totient is φ = 667321162.

The previous prime is 667321153. The next prime is 667321169. The reversal of 667321163 is 361123766.

667321163 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 667321163 - 2⁴ = 667321147 is a prime.

It is not a weakly prime, because it can be changed into another prime (667321169) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 333660581 + 333660582.

It is an arithmetic number, because the mean of its divisors is an integer number (333660582).

Almost surely, 2^667321163 is an apocalyptic number.

667321163 is a deficient number, since it is larger than the sum of its proper divisors (1).

667321163 is an equidigital number, since it uses as much as digits as its factorization.

667321163 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 27216, while the sum is 35.

The square root of 667321163 is about 25832.5601325149. The cubic root of 667321163 is about 873.8662488399.

The spelling of 667321163 in words is "six hundred sixty-seven million, three hundred twenty-one thousand, one hundred sixty-three".