1116551665 has 8 divisors (see below), whose sum is σ = 1344090600. Its totient is φ = 890422272.

The previous prime is 1116551633. The next prime is 1116551669. The reversal of 1116551665 is 5661556111.

It can be written as a sum of positive squares in 4 ways, for example, as 75134224 + 1041417441 = 8668^2 + 32271^2 .

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 1116551665 - 2⁵ = 1116551633 is a prime.

It is a super-2 number, since 2×1116551665² = 2493375241228544450, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1116551669) 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, 350640 + ... + 353809.

It is an arithmetic number, because the mean of its divisors is an integer number (168011325).

Almost surely, 2^1116551665 is an apocalyptic number.

It is an amenable number.

1116551665 is a deficient number, since it is larger than the sum of its proper divisors (227538935).

1116551665 is an equidigital number, since it uses as much as digits as its factorization.

1116551665 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 704771.

The product of its digits is 27000, while the sum is 37.

The square root of 1116551665 is about 33414.8419867579. The cubic root of 1116551665 is about 1037.4319235344.

The spelling of 1116551665 in words is "one billion, one hundred sixteen million, five hundred fifty-one thousand, six hundred sixty-five".