667970323 has 2 divisors, whose sum is σ = 667970324. Its totient is φ = 667970322.

The previous prime is 667970297. The next prime is 667970339. The reversal of 667970323 is 323079766.

667970323 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 667970323 - 2¹³ = 667962131 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 667970323.

It is not a weakly prime, because it can be changed into another prime (667970353) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 333985161 + 333985162.

It is an arithmetic number, because the mean of its divisors is an integer number (333985162).

Almost surely, 2^667970323 is an apocalyptic number.

667970323 is a deficient number, since it is larger than the sum of its proper divisors (1).

667970323 is an equidigital number, since it uses as much as digits as its factorization.

667970323 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 285768, while the sum is 43.

The square root of 667970323 is about 25845.1218414617. The cubic root of 667970323 is about 874.1495183249.

The spelling of 667970323 in words is "six hundred sixty-seven million, nine hundred seventy thousand, three hundred twenty-three".