1123659 has 8 divisors (see below), whose sum is σ = 1664720. Its totient is φ = 749088.

The previous prime is 1123651. The next prime is 1123667. The reversal of 1123659 is 9563211.

1123659 is a `hidden beast` number, since 1 + 1 + 2 + 3 + 659 = 666.

It is an interprime number because it is at equal distance from previous prime (1123651) and next prime (1123667).

It is not a de Polignac number, because 1123659 - 2³ = 1123651 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27), and also a Moran number because the ratio is a prime number: 41617 = 1123659 / (1 + 1 + 2 + 3 + 6 + 5 + 9).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1123651) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 20782 + ... + 20835.

It is an arithmetic number, because the mean of its divisors is an integer number (208090).

2^1123659 is an apocalyptic number.

1123659 is a deficient number, since it is larger than the sum of its proper divisors (541061).

1123659 is an equidigital number, since it uses as much as digits as its factorization.

1123659 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41626 (or 41620 counting only the distinct ones).

The product of its digits is 1620, while the sum is 27.

The square root of 1123659 is about 1060.0278298233. The cubic root of 1123659 is about 103.9628503902.

The spelling of 1123659 in words is "one million, one hundred twenty-three thousand, six hundred fifty-nine".