166704 has 40 divisors (see below), whose sum is σ = 452352. Its totient is φ = 52800.

The previous prime is 166703. The next prime is 166723. The reversal of 166704 is 407661.

166704 = T₁₂₇ + T₁₂₈ + ... + T₁₄₄.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is not an unprimeable number, because it can be changed into a prime (166703) 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 7 ways as a sum of consecutive naturals, for example, 1029 + ... + 1179.

2¹⁶⁶⁷⁰⁴ is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 166704, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (226176).

166704 is an abundant number, since it is smaller than the sum of its proper divisors (285648).

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

166704 is a wasteful number, since it uses less digits than its factorization.

166704 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 185 (or 179 counting only the distinct ones).

The product of its (nonzero) digits is 1008, while the sum is 24.

The square root of 166704 is about 408.2940117121. The cubic root of 166704 is about 55.0362295732.

The spelling of 166704 in words is "one hundred sixty-six thousand, seven hundred four".