160221065 has 4 divisors (see below), whose sum is σ = 192265284. Its totient is φ = 128176848.

The previous prime is 160221023. The next prime is 160221079. The reversal of 160221065 is 560122061.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 71182969 + 89038096 = 8437^2 + 9436^2 .

It is a cyclic number.

It is not a de Polignac number, because 160221065 - 2¹⁶ = 160155529 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 160221065.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16022102 + ... + 16022111.

It is an arithmetic number, because the mean of its divisors is an integer number (48066321).

Almost surely, 2^160221065 is an apocalyptic number.

It is an amenable number.

160221065 is a deficient number, since it is larger than the sum of its proper divisors (32044219).

160221065 is an equidigital number, since it uses as much as digits as its factorization.

160221065 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32044218.

The product of its (nonzero) digits is 720, while the sum is 23.

The square root of 160221065 is about 12657.8459857908. The cubic root of 160221065 is about 543.1334343949.

The spelling of 160221065 in words is "one hundred sixty million, two hundred twenty-one thousand, sixty-five".