1115689 has 4 divisors (see below), whose sum is σ = 1126224. Its totient is φ = 1105156.

The previous prime is 1115683. The next prime is 1115701. The reversal of 1115689 is 9865111.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 9865111 = 1693 ⋅5827.

It is a cyclic number.

It is not a de Polignac number, because 1115689 - 2⁵ = 1115657 is a prime.

It is a Duffinian number.

It is a plaindrome in base 10.

It is a self number, because there is not a number n which added to its sum of digits gives 1115689.

It is not an unprimeable number, because it can be changed into a prime (1115683) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5107 + ... + 5320.

It is an arithmetic number, because the mean of its divisors is an integer number (281556).

2^1115689 is an apocalyptic number.

It is an amenable number.

1115689 is a deficient number, since it is larger than the sum of its proper divisors (10535).

1115689 is a wasteful number, since it uses less digits than its factorization.

1115689 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10534.

The product of its digits is 2160, while the sum is 31.

The square root of 1115689 is about 1056.2618046678. The cubic root of 1115689 is about 103.7164676073.

The spelling of 1115689 in words is "one million, one hundred fifteen thousand, six hundred eighty-nine".