166575 has 12 divisors (see below), whose sum is σ = 275528. Its totient is φ = 88800.

The previous prime is 166571. The next prime is 166597. The reversal of 166575 is 575661.

It is not a de Polignac number, because 166575 - 2² = 166571 is a prime.

It is a Duffinian number.

It is a plaindrome in base 16.

It is a congruent number.

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 11 ways as a sum of consecutive naturals, for example, 1036 + ... + 1185.

2¹⁶⁶⁵⁷⁵ is an apocalyptic number.

166575 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

166575 is a deficient number, since it is larger than the sum of its proper divisors (108953).

166575 is a wasteful number, since it uses less digits than its factorization.

166575 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2234 (or 2229 counting only the distinct ones).

The product of its digits is 6300, while the sum is 30.

The square root of 166575 is about 408.1360067429. The cubic root of 166575 is about 55.0220297425.

It can be divided in two parts, 166 and 575, that added together give a triangular number (741 = T₃₈).

The spelling of 166575 in words is "one hundred sixty-six thousand, five hundred seventy-five".