166988 has 12 divisors (see below), whose sum is σ = 295680. Its totient is φ = 82512.

The previous prime is 166987. The next prime is 167009. The reversal of 166988 is 889661.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 166988.

It is not an unprimeable number, because it can be changed into a prime (166987) 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, 245 + ... + 627.

It is an arithmetic number, because the mean of its divisors is an integer number (24640).

2¹⁶⁶⁹⁸⁸ is an apocalyptic number.

It is an amenable number.

166988 is a deficient number, since it is larger than the sum of its proper divisors (128692).

166988 is a wasteful number, since it uses less digits than its factorization.

166988 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 496 (or 494 counting only the distinct ones).

The product of its digits is 20736, while the sum is 38.

The square root of 166988 is about 408.6416523068. The cubic root of 166988 is about 55.0674654195.

The spelling of 166988 in words is "one hundred sixty-six thousand, nine hundred eighty-eight".