166568 has 16 divisors (see below), whose sum is σ = 319680. Its totient is φ = 81328.

The previous prime is 166567. The next prime is 166571. The reversal of 166568 is 865661.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 166568.

It is not an unprimeable number, because it can be changed into a prime (166561) by changing a digit.

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, 155 + ... + 597.

It is an arithmetic number, because the mean of its divisors is an integer number (19980).

2¹⁶⁶⁵⁶⁸ is an apocalyptic number.

It is an amenable number.

166568 is a deficient number, since it is larger than the sum of its proper divisors (153112).

166568 is a wasteful number, since it uses less digits than its factorization.

166568 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 496 (or 492 counting only the distinct ones).

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

The square root of 166568 is about 408.1274310800. The cubic root of 166568 is about 55.0212589994.

The spelling of 166568 in words is "one hundred sixty-six thousand, five hundred sixty-eight".