166723283 has 4 divisors (see below), whose sum is σ = 166882968. Its totient is φ = 166563600.

The previous prime is 166723279. The next prime is 166723331. The reversal of 166723283 is 382327661.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 382327661 = 67 ⋅5706383.

It is a cyclic number.

It is not a de Polignac number, because 166723283 - 2² = 166723279 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (166723223) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 78266 + ... + 80367.

It is an arithmetic number, because the mean of its divisors is an integer number (41720742).

Almost surely, 2^166723283 is an apocalyptic number.

166723283 is a deficient number, since it is larger than the sum of its proper divisors (159685).

166723283 is a wasteful number, since it uses less digits than its factorization.

166723283 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 159684.

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

The square root of 166723283 is about 12912.1370423335. The cubic root of 166723283 is about 550.3835154323.

The spelling of 166723283 in words is "one hundred sixty-six million, seven hundred twenty-three thousand, two hundred eighty-three".