166870 has 32 divisors (see below), whose sum is σ = 344736. Its totient is φ = 57600.

The previous prime is 166867. The next prime is 166871. The reversal of 166870 is 78661.

It is a plaindrome in base 15.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (166871) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4050 + ... + 4090.

It is an arithmetic number, because the mean of its divisors is an integer number (10773).

2¹⁶⁶⁸⁷⁰ is an apocalyptic number.

166870 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

166870 is an abundant number, since it is smaller than the sum of its proper divisors (177866).

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

166870 is a wasteful number, since it uses less digits than its factorization.

166870 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 96.

The product of its (nonzero) digits is 2016, while the sum is 28.

The square root of 166870 is about 408.4972460127. The cubic root of 166870 is about 55.0544914491.

Subtracting from 166870 its reverse (78661), we obtain a square (88209 = 297²).

It can be divided in two parts, 16 and 6870, that added together give a palindrome (6886).

The spelling of 166870 in words is "one hundred sixty-six thousand, eight hundred seventy".