169668 has 24 divisors (see below), whose sum is σ = 440160. Its totient is φ = 56520.

The previous prime is 169667. The next prime is 169681. The reversal of 169668 is 866961.

169668 is nontrivially palindromic in base 13.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (169661) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 678 + ... + 893.

It is an arithmetic number, because the mean of its divisors is an integer number (18340).

2¹⁶⁹⁶⁶⁸ is an apocalyptic number.

169668 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

169668 is an abundant number, since it is smaller than the sum of its proper divisors (270492).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

169668 is a wasteful number, since it uses less digits than its factorization.

169668 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1584 (or 1576 counting only the distinct ones).

The product of its digits is 15552, while the sum is 36.

The square root of 169668 is about 411.9077566640. The cubic root of 169668 is about 55.3604969773.

It can be divided in two parts, 1696 and 68, that added together give a square (1764 = 42²).

The spelling of 169668 in words is "one hundred sixty-nine thousand, six hundred sixty-eight".