1115000665 has 4 divisors (see below), whose sum is σ = 1338000804. Its totient is φ = 892000528.

The previous prime is 1115000651. The next prime is 1115000681. The reversal of 1115000665 is 5660005111.

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 701773081 + 413227584 = 26491^2 + 20328^2 .

It is a cyclic number.

It is not a de Polignac number, because 1115000665 - 2¹¹ = 1114998617 is a prime.

It is a Duffinian 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, 111500062 + ... + 111500071.

It is an arithmetic number, because the mean of its divisors is an integer number (334500201).

Almost surely, 2^1115000665 is an apocalyptic number.

It is an amenable number.

1115000665 is a deficient number, since it is larger than the sum of its proper divisors (223000139).

1115000665 is an equidigital number, since it uses as much as digits as its factorization.

1115000665 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 223000138.

The product of its (nonzero) digits is 900, while the sum is 25.

The square root of 1115000665 is about 33391.6256717160. The cubic root of 1115000665 is about 1036.9513359702.

Adding to 1115000665 its reverse (5660005111), we get a palindrome (6775005776).

The spelling of 1115000665 in words is "one billion, one hundred fifteen million, six hundred sixty-five", and thus it is an aban number.