166570 has 8 divisors (see below), whose sum is σ = 299844. Its totient is φ = 66624.

The previous prime is 166567. The next prime is 166571. The reversal of 166570 is 75661.

It can be written as a sum of positive squares in 2 ways, for example, as 152881 + 13689 = 391^2 + 117^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a plaindrome in base 14 and base 16.

It is not an unprimeable number, because it can be changed into a prime (166571) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8319 + ... + 8338.

2¹⁶⁶⁵⁷⁰ is an apocalyptic number.

166570 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

166570 is a deficient number, since it is larger than the sum of its proper divisors (133274).

166570 is a wasteful number, since it uses less digits than its factorization.

166570 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16664.

The product of its (nonzero) digits is 1260, while the sum is 25.

The square root of 166570 is about 408.1298812878. The cubic root of 166570 is about 55.0214792139.

Subtracting from 166570 its reverse (75661), we obtain a palindrome (90909).

The spelling of 166570 in words is "one hundred sixty-six thousand, five hundred seventy".