667487027 has 2 divisors, whose sum is σ = 667487028. Its totient is φ = 667487026.

The previous prime is 667487017. The next prime is 667487033. The reversal of 667487027 is 720784766.

667487027 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 a de Polignac number, because none of the positive numbers 2^k-667487027 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (667487017) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 333743513 + 333743514.

It is an arithmetic number, because the mean of its divisors is an integer number (333743514).

Almost surely, 2^667487027 is an apocalyptic number.

667487027 is a deficient number, since it is larger than the sum of its proper divisors (1).

667487027 is an equidigital number, since it uses as much as digits as its factorization.

667487027 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 790272, while the sum is 47.

The square root of 667487027 is about 25835.7703001091. The cubic root of 667487027 is about 873.9386432394.

The spelling of 667487027 in words is "six hundred sixty-seven million, four hundred eighty-seven thousand, twenty-seven".