166575140 has 24 divisors (see below), whose sum is σ = 355544952. Its totient is φ = 65537280.

The previous prime is 166575133. The next prime is 166575151. The reversal of 166575140 is 41575661.

It can be written as a sum of positive squares in 4 ways, for example, as 3297856 + 163277284 = 1816^2 + 12778^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 166575140.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 67049 + ... + 69488.

It is an arithmetic number, because the mean of its divisors is an integer number (14814373).

Almost surely, 2^166575140 is an apocalyptic number.

166575140 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

166575140 is an abundant number, since it is smaller than the sum of its proper divisors (188969812).

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

166575140 is a wasteful number, since it uses less digits than its factorization.

166575140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 136607 (or 136605 counting only the distinct ones).

The product of its (nonzero) digits is 25200, while the sum is 35.

The square root of 166575140 is about 12906.3991879997. The cubic root of 166575140 is about 550.2204515715.

The spelling of 166575140 in words is "one hundred sixty-six million, five hundred seventy-five thousand, one hundred forty".