1223533667 has 4 divisors (see below), whose sum is σ = 1224138720. Its totient is φ = 1222928616.

The previous prime is 1223533651. The next prime is 1223533679. The reversal of 1223533667 is 7663353221.

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 1223533667 - 2⁴ = 1223533651 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1223533667.

It is not an unprimeable number, because it can be changed into a prime (1223533687) 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, 299483 + ... + 303540.

It is an arithmetic number, because the mean of its divisors is an integer number (306034680).

Almost surely, 2^1223533667 is an apocalyptic number.

1223533667 is a deficient number, since it is larger than the sum of its proper divisors (605053).

1223533667 is an equidigital number, since it uses as much as digits as its factorization.

1223533667 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 605052.

The product of its digits is 136080, while the sum is 38.

The square root of 1223533667 is about 34979.0461133519. The cubic root of 1223533667 is about 1069.5603827728.

Adding to 1223533667 its reverse (7663353221), we get a palindrome (8886886888).

The spelling of 1223533667 in words is "one billion, two hundred twenty-three million, five hundred thirty-three thousand, six hundred sixty-seven".