166870343 has 2 divisors, whose sum is σ = 166870344. Its totient is φ = 166870342.

The previous prime is 166870339. The next prime is 166870367. The reversal of 166870343 is 343078661.

It is a weak prime.

It is an emirp because it is prime and its reverse (343078661) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 166870343 - 2² = 166870339 is a prime.

It is a super-2 number, since 2×166870343² = 55691422745875298, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 166870297 and 166870306.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (166870243) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 83435171 + 83435172.

It is an arithmetic number, because the mean of its divisors is an integer number (83435172).

Almost surely, 2^166870343 is an apocalyptic number.

166870343 is a deficient number, since it is larger than the sum of its proper divisors (1).

166870343 is an equidigital number, since it uses as much as digits as its factorization.

166870343 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 72576, while the sum is 38.

The square root of 166870343 is about 12917.8304292942. The cubic root of 166870343 is about 550.5452917045.

The spelling of 166870343 in words is "one hundred sixty-six million, eight hundred seventy thousand, three hundred forty-three".