166143085 has 8 divisors (see below), whose sum is σ = 200405880. Its totient is φ = 132225024.

The previous prime is 166143079. The next prime is 166143097. The reversal of 166143085 is 580341661.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 35772361 + 130370724 = 5981^2 + 11418^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 166143085 - 2¹¹ = 166141037 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 166143085.

It is a congruent number.

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, 85120 + ... + 87049.

It is an arithmetic number, because the mean of its divisors is an integer number (25050735).

Almost surely, 2^166143085 is an apocalyptic number.

It is an amenable number.

166143085 is a deficient number, since it is larger than the sum of its proper divisors (34262795).

166143085 is a wasteful number, since it uses less digits than its factorization.

166143085 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 172367.

The product of its (nonzero) digits is 17280, while the sum is 34.

The square root of 166143085 is about 12889.6503055746. The cubic root of 166143085 is about 549.7443274477.

The spelling of 166143085 in words is "one hundred sixty-six million, one hundred forty-three thousand, eighty-five".