1223563 has 8 divisors (see below), whose sum is σ = 1367856. Its totient is φ = 1084800.

The previous prime is 1223561. The next prime is 1223569. The reversal of 1223563 is 3653221.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1223563 - 2¹ = 1223561 is a prime.

It is a Duffinian number.

It is a nialpdrome in base 11.

It is not an unprimeable number, because it can be changed into a prime (1223561) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 906 + ... + 1807.

It is an arithmetic number, because the mean of its divisors is an integer number (170982).

2^1223563 is an apocalyptic number.

1223563 is a deficient number, since it is larger than the sum of its proper divisors (144293).

1223563 is a wasteful number, since it uses less digits than its factorization.

1223563 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2765.

The product of its digits is 1080, while the sum is 22.

The square root of 1223563 is about 1106.1478201398. The cubic root of 1223563 is about 106.9568929919.

Adding to 1223563 its reverse (3653221), we get a palindrome (4876784).

The spelling of 1223563 in words is "one million, two hundred twenty-three thousand, five hundred sixty-three".