1116665005 has 4 divisors (see below), whose sum is σ = 1339998012. Its totient is φ = 893332000.

The previous prime is 1116664993. The next prime is 1116665029. The reversal of 1116665005 is 5005666111.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 5005666111 = 23 ⋅217637657.

It can be written as a sum of positive squares in 2 ways, for example, as 127373796 + 989291209 = 11286^2 + 31453^2 .

It is not a de Polignac number, because 1116665005 - 2¹³ = 1116656813 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 111666496 + ... + 111666505.

It is an arithmetic number, because the mean of its divisors is an integer number (334999503).

Almost surely, 2^1116665005 is an apocalyptic number.

It is an amenable number.

1116665005 is a deficient number, since it is larger than the sum of its proper divisors (223333007).

1116665005 is an equidigital number, since it uses as much as digits as its factorization.

1116665005 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 223333006.

The product of its (nonzero) digits is 5400, while the sum is 31.

The square root of 1116665005 is about 33416.5378966763. The cubic root of 1116665005 is about 1037.4670252257.

The spelling of 1116665005 in words is "one billion, one hundred sixteen million, six hundred sixty-five thousand, five".