1115985 has 32 divisors (see below), whose sum is σ = 1975680. Its totient is φ = 534528.

The previous prime is 1115941. The next prime is 1115987. The reversal of 1115985 is 5895111.

It is not a de Polignac number, because 1115985 - 2⁷ = 1115857 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1115987) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 11457 + ... + 11553.

It is an arithmetic number, because the mean of its divisors is an integer number (61740).

2^1115985 is an apocalyptic number.

1115985 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1115985 is a deficient number, since it is larger than the sum of its proper divisors (859695).

1115985 is a wasteful number, since it uses less digits than its factorization.

1115985 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 177.

The product of its digits is 1800, while the sum is 30.

The square root of 1115985 is about 1056.4019121528. The cubic root of 1115985 is about 103.7256390280.

The spelling of 1115985 in words is "one million, one hundred fifteen thousand, nine hundred eighty-five".