1116665505 has 24 divisors (see below), whose sum is σ = 1936351872. Its totient is φ = 595309344.

The previous prime is 1116665489. The next prime is 1116665507. The reversal of 1116665505 is 5055666111.

It is not a de Polignac number, because 1116665505 - 2⁴ = 1116665489 is a prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 1116665505.

It is not an unprimeable number, because it can be changed into a prime (1116665507) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 174472 + ... + 180758.

It is an arithmetic number, because the mean of its divisors is an integer number (80681328).

Almost surely, 2^1116665505 is an apocalyptic number.

1116665505 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1116665505 is a deficient number, since it is larger than the sum of its proper divisors (819686367).

1116665505 is a wasteful number, since it uses less digits than its factorization.

1116665505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10245 (or 10242 counting only the distinct ones).

The product of its (nonzero) digits is 27000, while the sum is 36.

The square root of 1116665505 is about 33416.5453780010. The cubic root of 1116665505 is about 1037.4671800718.

The spelling of 1116665505 in words is "one billion, one hundred sixteen million, six hundred sixty-five thousand, five hundred five".