168656 has 20 divisors (see below), whose sum is σ = 333312. Its totient is φ = 82656.

The previous prime is 168643. The next prime is 168673. The reversal of 168656 is 656861.

It is a plaindrome in base 14.

It is a congruent number.

It is an unprimeable number.

168656 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 in 3 ways as a sum of consecutive naturals, for example, 1265 + ... + 1391.

2¹⁶⁸⁶⁵⁶ is an apocalyptic number.

168656 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

168656 is a deficient number, since it is larger than the sum of its proper divisors (164656).

168656 is a wasteful number, since it uses less digits than its factorization.

168656 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 218 (or 212 counting only the distinct ones).

The product of its digits is 8640, while the sum is 32.

The square root of 168656 is about 410.6774890349. The cubic root of 168656 is about 55.2502098639.

The spelling of 168656 in words is "one hundred sixty-eight thousand, six hundred fifty-six".