1108685 has 4 divisors (see below), whose sum is σ = 1330428. Its totient is φ = 886944.

The previous prime is 1108663. The next prime is 1108691. The reversal of 1108685 is 5868011.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 5868011 = 151 ⋅38861.

It can be written as a sum of positive squares in 2 ways, for example, as 682276 + 426409 = 826^2 + 653^2 .

It is a cyclic number.

It is not a de Polignac number, because 1108685 - 2¹² = 1104589 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 110864 + ... + 110873.

It is an arithmetic number, because the mean of its divisors is an integer number (332607).

2^1108685 is an apocalyptic number.

It is an amenable number.

1108685 is a deficient number, since it is larger than the sum of its proper divisors (221743).

1108685 is an equidigital number, since it uses as much as digits as its factorization.

1108685 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 221742.

The product of its (nonzero) digits is 1920, while the sum is 29.

The square root of 1108685 is about 1052.9411189615. The cubic root of 1108685 is about 103.4989770177.

The spelling of 1108685 in words is "one million, one hundred eight thousand, six hundred eighty-five".