166256 has 10 divisors (see below), whose sum is σ = 322152. Its totient is φ = 83120.

The previous prime is 166247. The next prime is 166259. The reversal of 166256 is 652661.

166256 is nontrivially palindromic in base 3.

It is a zygodrome in base 3.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (166259) by changing a digit.

166256 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5180 + ... + 5211.

2¹⁶⁶²⁵⁶ is an apocalyptic number.

166256 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

166256 is a deficient number, since it is larger than the sum of its proper divisors (155896).

166256 is a wasteful number, since it uses less digits than its factorization.

166256 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10399 (or 10393 counting only the distinct ones).

The product of its digits is 2160, while the sum is 26.

The square root of 166256 is about 407.7450183632. The cubic root of 166256 is about 54.9868839247.

The spelling of 166256 in words is "one hundred sixty-six thousand, two hundred fifty-six".