2160665617 has 8 divisors (see below), whose sum is σ = 2481147360. Its totient is φ = 1860860160.

The previous prime is 2160665593. The next prime is 2160665641. The reversal of 2160665617 is 7165660612.

It is an interprime number because it is at equal distance from previous prime (2160665593) and next prime (2160665641).

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 2160665617 - 2⁷ = 2160665489 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2160665617.

It is not an unprimeable number, because it can be changed into a prime (2160665657) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5168848 + ... + 5169265.

It is an arithmetic number, because the mean of its divisors is an integer number (310143420).

Almost surely, 2^2160665617 is an apocalyptic number.

It is an amenable number.

2160665617 is a deficient number, since it is larger than the sum of its proper divisors (320481743).

2160665617 is a wasteful number, since it uses less digits than its factorization.

2160665617 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10338143.

The product of its (nonzero) digits is 90720, while the sum is 40.

The square root of 2160665617 is about 46482.9605016720. The cubic root of 2160665617 is about 1292.7935807857.

The spelling of 2160665617 in words is "two billion, one hundred sixty million, six hundred sixty-five thousand, six hundred seventeen".