166870339 has 2 divisors, whose sum is σ = 166870340. Its totient is φ = 166870338.

The previous prime is 166870337. The next prime is 166870343. The reversal of 166870339 is 933078661.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 166870339 - 2¹ = 166870337 is a prime.

Together with 166870337, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 166870295 and 166870304.

It is not a weakly prime, because it can be changed into another prime (166870337) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 83435169 + 83435170.

It is an arithmetic number, because the mean of its divisors is an integer number (83435170).

Almost surely, 2^166870339 is an apocalyptic number.

166870339 is a deficient number, since it is larger than the sum of its proper divisors (1).

166870339 is an equidigital number, since it uses as much as digits as its factorization.

166870339 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 163296, while the sum is 43.

The square root of 166870339 is about 12917.8302744695. The cubic root of 166870339 is about 550.5452873055.

The spelling of 166870339 in words is "one hundred sixty-six million, eight hundred seventy thousand, three hundred thirty-nine".