223320750605 has 4 divisors (see below), whose sum is σ = 267984900732. Its totient is φ = 178656600480.

The previous prime is 223320750559. The next prime is 223320750637. The reversal of 223320750605 is 506057023322.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 506057023322 = 2 ⋅253028511661.

It can be written as a sum of positive squares in 2 ways, for example, as 101085207721 + 122235542884 = 317939^2 + 349622^2 .

It is not a de Polignac number, because 223320750605 - 2⁸ = 223320750349 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 22332075056 + ... + 22332075065.

It is an arithmetic number, because the mean of its divisors is an integer number (66996225183).

Almost surely, 2^223320750605 is an apocalyptic number.

It is an amenable number.

223320750605 is a deficient number, since it is larger than the sum of its proper divisors (44664150127).

223320750605 is an equidigital number, since it uses as much as digits as its factorization.

223320750605 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44664150126.

The product of its (nonzero) digits is 75600, while the sum is 35.

Adding to 223320750605 its reverse (506057023322), we get a palindrome (729377773927).

The spelling of 223320750605 in words is "two hundred twenty-three billion, three hundred twenty million, seven hundred fifty thousand, six hundred five".