1123685 has 4 divisors (see below), whose sum is σ = 1348428. Its totient is φ = 898944.

The previous prime is 1123669. The next prime is 1123691. The reversal of 1123685 is 5863211.

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 293764 + 829921 = 542^2 + 911^2 .

It is a cyclic number.

It is not a de Polignac number, because 1123685 - 2⁴ = 1123669 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 3 ways as a sum of consecutive naturals, for example, 112364 + ... + 112373.

It is an arithmetic number, because the mean of its divisors is an integer number (337107).

2^1123685 is an apocalyptic number.

It is an amenable number.

1123685 is a deficient number, since it is larger than the sum of its proper divisors (224743).

1123685 is an equidigital number, since it uses as much as digits as its factorization.

1123685 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 224742.

The product of its digits is 1440, while the sum is 26.

The square root of 1123685 is about 1060.0400935814. The cubic root of 1123685 is about 103.9636522388.

Adding to 1123685 its reverse (5863211), we get a palindrome (6986896).

The spelling of 1123685 in words is "one million, one hundred twenty-three thousand, six hundred eighty-five".