667244867 has 2 divisors, whose sum is σ = 667244868. Its totient is φ = 667244866.

The previous prime is 667244843. The next prime is 667244873. The reversal of 667244867 is 768442766.

667244867 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 667244867 - 2¹⁴ = 667228483 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (667244827) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 333622433 + 333622434.

It is an arithmetic number, because the mean of its divisors is an integer number (333622434).

Almost surely, 2^667244867 is an apocalyptic number.

667244867 is a deficient number, since it is larger than the sum of its proper divisors (1).

667244867 is an equidigital number, since it uses as much as digits as its factorization.

667244867 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2709504, while the sum is 50.

The square root of 667244867 is about 25831.0833493294. The cubic root of 667244867 is about 873.8329440165.

The spelling of 667244867 in words is "six hundred sixty-seven million, two hundred forty-four thousand, eight hundred sixty-seven".