667004867 has 2 divisors, whose sum is σ = 667004868. Its totient is φ = 667004866.

The previous prime is 667004857. The next prime is 667004887. The reversal of 667004867 is 768400766.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 667004867 - 2⁶ = 667004803 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (667004827) 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 as a sum of consecutive naturals, namely, 333502433 + 333502434.

It is an arithmetic number, because the mean of its divisors is an integer number (333502434).

Almost surely, 2^667004867 is an apocalyptic number.

667004867 is a deficient number, since it is larger than the sum of its proper divisors (1).

667004867 is an equidigital number, since it uses as much as digits as its factorization.

667004867 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 338688, while the sum is 44.

The square root of 667004867 is about 25826.4373656143. The cubic root of 667004867 is about 873.7281623656.

The spelling of 667004867 in words is "six hundred sixty-seven million, four thousand, eight hundred sixty-seven".