1223633 has 2 divisors, whose sum is σ = 1223634. Its totient is φ = 1223632.

The previous prime is 1223603. The next prime is 1223683. The reversal of 1223633 is 3363221.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 744769 + 478864 = 863^2 + 692^2 .

It is a cyclic number.

It is not a de Polignac number, because 1223633 - 2⁶ = 1223569 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is equal to p₉₄₆₀₁ and since 1223633 and 94601 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (1223603) 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 as a sum of consecutive naturals, namely, 611816 + 611817.

It is an arithmetic number, because the mean of its divisors is an integer number (611817).

2^1223633 is an apocalyptic number.

It is an amenable number.

1223633 is a deficient number, since it is larger than the sum of its proper divisors (1).

1223633 is an equidigital number, since it uses as much as digits as its factorization.

1223633 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 648, while the sum is 20.

The square root of 1223633 is about 1106.1794610279. The cubic root of 1223633 is about 106.9589326198.

Adding to 1223633 its reverse (3363221), we get a palindrome (4586854).

The spelling of 1223633 in words is "one million, two hundred twenty-three thousand, six hundred thirty-three".