166020575 has 48 divisors (see below), whose sum is σ = 252960000. Its totient is φ = 107745120.

The previous prime is 166020557. The next prime is 166020577. The reversal of 166020575 is 575020661.

It is a happy number.

It is not a de Polignac number, because 166020575 - 2¹⁴ = 166004191 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (166020577) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 162416 + ... + 163434.

It is an arithmetic number, because the mean of its divisors is an integer number (5270000).

Almost surely, 2^166020575 is an apocalyptic number.

166020575 is a deficient number, since it is larger than the sum of its proper divisors (86939425).

166020575 is a wasteful number, since it uses less digits than its factorization.

166020575 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1069 (or 1050 counting only the distinct ones).

The product of its (nonzero) digits is 12600, while the sum is 32.

The square root of 166020575 is about 12884.8971668384. The cubic root of 166020575 is about 549.6091713798.

The spelling of 166020575 in words is "one hundred sixty-six million, twenty thousand, five hundred seventy-five".