1223247 has 8 divisors (see below), whose sum is σ = 1658880. Its totient is φ = 801560.

The previous prime is 1223237. The next prime is 1223263. The reversal of 1223247 is 7423221.

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 1223247 - 2⁴ = 1223231 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1223207) 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, 3279 + ... + 3632.

It is an arithmetic number, because the mean of its divisors is an integer number (207360).

2^1223247 is an apocalyptic number.

1223247 is a deficient number, since it is larger than the sum of its proper divisors (435633).

1223247 is an equidigital number, since it uses as much as digits as its factorization.

1223247 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6973.

The product of its digits is 672, while the sum is 21.

The square root of 1223247 is about 1106.0049728640. The cubic root of 1223247 is about 106.9476845604.

Adding to 1223247 its reverse (7423221), we get a palindrome (8646468).

The spelling of 1223247 in words is "one million, two hundred twenty-three thousand, two hundred forty-seven".