1116785617 has 4 divisors (see below), whose sum is σ = 1129333860. Its totient is φ = 1104237376.

The previous prime is 1116785603. The next prime is 1116785623. The reversal of 1116785617 is 7165876111.

It is a happy number.

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 405176641 + 711608976 = 20129^2 + 26676^2 .

It is a cyclic number.

It is not a de Polignac number, because 1116785617 - 2⁷ = 1116785489 is a prime.

It is a super-2 number, since 2×1116785617² = 2494420228676141378, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1116785627) by changing a digit.

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, 6273988 + ... + 6274165.

It is an arithmetic number, because the mean of its divisors is an integer number (282333465).

Almost surely, 2^1116785617 is an apocalyptic number.

It is an amenable number.

1116785617 is a deficient number, since it is larger than the sum of its proper divisors (12548243).

1116785617 is an equidigital number, since it uses as much as digits as its factorization.

1116785617 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12548242.

The product of its digits is 70560, while the sum is 43.

The square root of 1116785617 is about 33418.3425232312. The cubic root of 1116785617 is about 1037.5043764658.

The spelling of 1116785617 in words is "one billion, one hundred sixteen million, seven hundred eighty-five thousand, six hundred seventeen".