1123656 has 16 divisors (see below), whose sum is σ = 2809200. Its totient is φ = 374544.

The previous prime is 1123651. The next prime is 1123667. The reversal of 1123656 is 6563211.

It is a Harshad number since it is a multiple of its sum of digits (24), and also a Moran number because the ratio is a prime number: 46819 = 1123656 / (1 + 1 + 2 + 3 + 6 + 5 + 6).

It is not an unprimeable number, because it can be changed into a prime (1123651) 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, 23386 + ... + 23433.

It is an arithmetic number, because the mean of its divisors is an integer number (175575).

2^1123656 is an apocalyptic number.

It is an amenable number.

1123656 is an abundant number, since it is smaller than the sum of its proper divisors (1685544).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1123656 is a wasteful number, since it uses less digits than its factorization.

1123656 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46828 (or 46824 counting only the distinct ones).

The product of its digits is 1080, while the sum is 24.

The square root of 1123656 is about 1060.0264147652. The cubic root of 1123656 is about 103.9627578684.

Adding to 1123656 its reverse (6563211), we get a palindrome (7686867).

The spelling of 1123656 in words is "one million, one hundred twenty-three thousand, six hundred fifty-six".