1223773 has 2 divisors, whose sum is σ = 1223774. Its totient is φ = 1223772.

The previous prime is 1223767. The next prime is 1223777. The reversal of 1223773 is 3773221.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 956484 + 267289 = 978^2 + 517^2 .

It is an emirp because it is prime and its reverse (3773221) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1223773 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1223777) 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, 611886 + 611887.

It is an arithmetic number, because the mean of its divisors is an integer number (611887).

2^1223773 is an apocalyptic number.

It is an amenable number.

1223773 is a deficient number, since it is larger than the sum of its proper divisors (1).

1223773 is an equidigital number, since it uses as much as digits as its factorization.

1223773 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1764, while the sum is 25.

The square root of 1223773 is about 1106.2427400892. The cubic root of 1223773 is about 106.9630116423.

Adding to 1223773 its reverse (3773221), we get a palindrome (4996994).

The spelling of 1223773 in words is "one million, two hundred twenty-three thousand, seven hundred seventy-three".