1223747 has 4 divisors (see below), whose sum is σ = 1398576. Its totient is φ = 1048920.

The previous prime is 1223731. The next prime is 1223749. The reversal of 1223747 is 7473221.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1223747 - 2⁴ = 1223731 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1223749) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 87404 + ... + 87417.

It is an arithmetic number, because the mean of its divisors is an integer number (349644).

2^1223747 is an apocalyptic number.

1223747 is a deficient number, since it is larger than the sum of its proper divisors (174829).

1223747 is an equidigital number, since it uses as much as digits as its factorization.

1223747 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 174828.

The product of its digits is 2352, while the sum is 26.

The square root of 1223747 is about 1106.2309885372. The cubic root of 1223747 is about 106.9622541331.

Adding to 1223747 its reverse (7473221), we get a palindrome (8696968).

The spelling of 1223747 in words is "one million, two hundred twenty-three thousand, seven hundred forty-seven".