1223613 has 8 divisors (see below), whose sum is σ = 1812800. Its totient is φ = 815724.

The previous prime is 1223603. The next prime is 1223633. The reversal of 1223613 is 3163221.

It is not a de Polignac number, because 1223613 - 2⁶ = 1223549 is a prime.

It is a Duffinian number.

It is a plaindrome in base 14 and base 16.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1223603) 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, 22633 + ... + 22686.

It is an arithmetic number, because the mean of its divisors is an integer number (226600).

2^1223613 is an apocalyptic number.

It is an amenable number.

1223613 is a deficient number, since it is larger than the sum of its proper divisors (589187).

1223613 is an equidigital number, since it uses as much as digits as its factorization.

1223613 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45328 (or 45322 counting only the distinct ones).

The product of its digits is 216, while the sum is 18.

The square root of 1223613 is about 1106.1704208665. The cubic root of 1223613 is about 106.9583498769.

Adding to 1223613 its reverse (3163221), we get a palindrome (4386834).

The spelling of 1223613 in words is "one million, two hundred twenty-three thousand, six hundred thirteen".