166814273 has 2 divisors, whose sum is σ = 166814274. Its totient is φ = 166814272.

The previous prime is 166814261. The next prime is 166814303. The reversal of 166814273 is 372418661.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 126720049 + 40094224 = 11257^2 + 6332^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-166814273 is a prime.

It is not a weakly prime, because it can be changed into another prime (166814573) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 83407136 + 83407137.

It is an arithmetic number, because the mean of its divisors is an integer number (83407137).

Almost surely, 2^166814273 is an apocalyptic number.

It is an amenable number.

166814273 is a deficient number, since it is larger than the sum of its proper divisors (1).

166814273 is an equidigital number, since it uses as much as digits as its factorization.

166814273 is an evil number, because the sum of its binary digits is even.

The product of its digits is 48384, while the sum is 38.

The square root of 166814273 is about 12915.6599908793. The cubic root of 166814273 is about 550.4836220033.

The spelling of 166814273 in words is "one hundred sixty-six million, eight hundred fourteen thousand, two hundred seventy-three".