1606320560665 has 16 divisors (see below), whose sum is σ = 2042077226112. Its totient is φ = 1208809947904.

The previous prime is 1606320560599. The next prime is 1606320560693. The reversal of 1606320560665 is 5660650236061.

It is a cyclic number.

It is not a de Polignac number, because 1606320560665 - 2¹¹ = 1606320558617 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4958839 + ... + 5272828.

It is an arithmetic number, because the mean of its divisors is an integer number (127629826632).

Almost surely, 2^{1606320560665} is an apocalyptic number.

It is an amenable number.

1606320560665 is a deficient number, since it is larger than the sum of its proper divisors (435756665447).

1606320560665 is a wasteful number, since it uses less digits than its factorization.

1606320560665 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10233536.

The product of its (nonzero) digits is 1166400, while the sum is 46.

The spelling of 1606320560665 in words is "one trillion, six hundred six billion, three hundred twenty million, five hundred sixty thousand, six hundred sixty-five".