1606065161 has 8 divisors (see below), whose sum is σ = 1645777224. Its totient is φ = 1566378880.

The previous prime is 1606065127. The next prime is 1606065233. The reversal of 1606065161 is 1615606061.

It can be written as a sum of positive squares in 4 ways, for example, as 59536 + 1606005625 = 244^2 + 40075^2 .

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1606065161 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1606065101) 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 7 ways as a sum of consecutive naturals, for example, 199955 + ... + 207831.

It is an arithmetic number, because the mean of its divisors is an integer number (205722153).

Almost surely, 2^1606065161 is an apocalyptic number.

It is an amenable number.

1606065161 is a deficient number, since it is larger than the sum of its proper divisors (39712063).

1606065161 is an equidigital number, since it uses as much as digits as its factorization.

1606065161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12891.

The product of its (nonzero) digits is 6480, while the sum is 32.

The square root of 1606065161 is about 40075.7428003524. The cubic root of 1606065161 is about 1171.0831183163.

The spelling of 1606065161 in words is "one billion, six hundred six million, sixty-five thousand, one hundred sixty-one".