667970339 has 2 divisors, whose sum is σ = 667970340. Its totient is φ = 667970338.

The previous prime is 667970323. The next prime is 667970351. The reversal of 667970339 is 933079766.

667970339 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 667970339 - 2⁴ = 667970323 is a prime.

It is a Chen prime.

It is equal to p_34678499 and since 667970339 and 34678499 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (667970389) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 333985169 + 333985170.

It is an arithmetic number, because the mean of its divisors is an integer number (333985170).

Almost surely, 2^667970339 is an apocalyptic number.

667970339 is a deficient number, since it is larger than the sum of its proper divisors (1).

667970339 is an equidigital number, since it uses as much as digits as its factorization.

667970339 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1285956, while the sum is 50.

The square root of 667970339 is about 25845.1221509979. The cubic root of 667970339 is about 874.1495253045.

The spelling of 667970339 in words is "six hundred sixty-seven million, nine hundred seventy thousand, three hundred thirty-nine".