223344666689 has 4 divisors (see below), whose sum is σ = 225647189124. Its totient is φ = 221042144256.

The previous prime is 223344666661. The next prime is 223344666697. The reversal of 223344666689 is 986666443322.

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

It can be written as a sum of positive squares in 2 ways, for example, as 185667915664 + 37676751025 = 430892^2 + 194105^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-223344666689 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a plaindrome in base 10.

It is not an unprimeable number, because it can be changed into a prime (223344666659) 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, 1151261072 + ... + 1151261265.

It is an arithmetic number, because the mean of its divisors is an integer number (56411797281).

Almost surely, 2^223344666689 is an apocalyptic number.

It is an amenable number.

223344666689 is a deficient number, since it is larger than the sum of its proper divisors (2302522435).

223344666689 is an equidigital number, since it uses as much as digits as its factorization.

223344666689 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2302522434.

The product of its digits is 53747712, while the sum is 59.

The spelling of 223344666689 in words is "two hundred twenty-three billion, three hundred forty-four million, six hundred sixty-six thousand, six hundred eighty-nine".