1116815 has 16 divisors (see below), whose sum is σ = 1622592. Its totient is φ = 720384.

The previous prime is 1116809. The next prime is 1116821. The reversal of 1116815 is 5186111.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (1116809) and next prime (1116821).

It is not a de Polignac number, because 1116815 - 2⁶ = 1116751 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 15 ways as a sum of consecutive naturals, for example, 344 + ... + 1533.

It is an arithmetic number, because the mean of its divisors is an integer number (101412).

2^1116815 is an apocalyptic number.

1116815 is a deficient number, since it is larger than the sum of its proper divisors (505777).

1116815 is a wasteful number, since it uses less digits than its factorization.

1116815 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1906.

The product of its digits is 240, while the sum is 23.

The square root of 1116815 is about 1056.7946820457. The cubic root of 1116815 is about 103.7513475414.

The spelling of 1116815 in words is "one million, one hundred sixteen thousand, eight hundred fifteen".