1105623 has 8 divisors (see below), whose sum is σ = 1638000. Its totient is φ = 737064.

The previous prime is 1105619. The next prime is 1105627. The reversal of 1105623 is 3265011.

It is an interprime number because it is at equal distance from previous prime (1105619) and next prime (1105627).

It is not a de Polignac number, because 1105623 - 2² = 1105619 is a prime.

1105623 is a lucky number.

It is a junction number, because it is equal to n+sod(n) for n = 1105596 and 1105605.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1105627) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 20448 + ... + 20501.

It is an arithmetic number, because the mean of its divisors is an integer number (204750).

2^1105623 is an apocalyptic number.

1105623 is a deficient number, since it is larger than the sum of its proper divisors (532377).

1105623 is an equidigital number, since it uses as much as digits as its factorization.

1105623 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40958 (or 40952 counting only the distinct ones).

The product of its (nonzero) digits is 180, while the sum is 18.

The square root of 1105623 is about 1051.4860912062. The cubic root of 1105623 is about 103.4036069561.

It can be divided in two parts, 1105 and 623, that added together give a cube (1728 = 12³).

The spelling of 1105623 in words is "one million, one hundred five thousand, six hundred twenty-three".