166605343 has 2 divisors, whose sum is σ = 166605344. Its totient is φ = 166605342.

The previous prime is 166605337. The next prime is 166605347. The reversal of 166605343 is 343506661.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 166605343 - 2⁹ = 166604831 is a prime.

It is a super-2 number, since 2×166605343² = 55514680632295298, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 166605299 and 166605308.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (166605347) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 83302671 + 83302672.

It is an arithmetic number, because the mean of its divisors is an integer number (83302672).

Almost surely, 2^166605343 is an apocalyptic number.

166605343 is a deficient number, since it is larger than the sum of its proper divisors (1).

166605343 is an equidigital number, since it uses as much as digits as its factorization.

166605343 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 38880, while the sum is 34.

The square root of 166605343 is about 12907.5692134499. The cubic root of 166605343 is about 550.2537044406.

The spelling of 166605343 in words is "one hundred sixty-six million, six hundred five thousand, three hundred forty-three".