166470 has 32 divisors (see below), whose sum is σ = 414720. Its totient is φ = 42720.

The previous prime is 166457. The next prime is 166471. The reversal of 166470 is 74661.

It is a self number, because there is not a number n which added to its sum of digits gives 166470.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (166471) 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 15 ways as a sum of consecutive naturals, for example, 841 + ... + 1019.

It is an arithmetic number, because the mean of its divisors is an integer number (12960).

2¹⁶⁶⁴⁷⁰ is an apocalyptic number.

166470 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 166470, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (207360).

166470 is an abundant number, since it is smaller than the sum of its proper divisors (248250).

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

166470 is a wasteful number, since it uses less digits than its factorization.

166470 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 220.

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

The square root of 166470 is about 408.0073528749. The cubic root of 166470 is about 55.0104663277.

Subtracting from 166470 its reverse (74661), we obtain a square (91809 = 303²).

It can be divided in two parts, 166 and 470, that added together give a palindrome (636).

The spelling of 166470 in words is "one hundred sixty-six thousand, four hundred seventy".