168988 has 12 divisors (see below), whose sum is σ = 299880. Its totient is φ = 83312.

The previous prime is 168977. The next prime is 168991. The reversal of 168988 is 889861.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 168988.

It is a congruent number.

It is an unprimeable number.

168988 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, 78 + ... + 586.

It is an arithmetic number, because the mean of its divisors is an integer number (24990).

2¹⁶⁸⁹⁸⁸ is an apocalyptic number.

It is an amenable number.

168988 is a deficient number, since it is larger than the sum of its proper divisors (130892).

168988 is a wasteful number, since it uses less digits than its factorization.

168988 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 596 (or 594 counting only the distinct ones).

The product of its digits is 27648, while the sum is 40.

The square root of 168988 is about 411.0815004351. The cubic root of 168988 is about 55.2864395201.

It can be divided in two parts, 168 and 988, that added together give a square (1156 = 34²).

The spelling of 168988 in words is "one hundred sixty-eight thousand, nine hundred eighty-eight".