65044223 has 4 divisors (see below), whose sum is σ = 65714880. Its totient is φ = 64373568.

The previous prime is 65044219. The next prime is 65044237. The reversal of 65044223 is 32244056.

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 65044223 - 2² = 65044219 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 65044192 and 65044201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (65044823) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 335183 + ... + 335376.

It is an arithmetic number, because the mean of its divisors is an integer number (16428720).

Almost surely, 2^65044223 is an apocalyptic number.

65044223 is a deficient number, since it is larger than the sum of its proper divisors (670657).

65044223 is an equidigital number, since it uses as much as digits as its factorization.

65044223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 670656.

The product of its (nonzero) digits is 5760, while the sum is 26.

The square root of 65044223 is about 8064.9998760074. Note that the first 3 decimals coincide. The cubic root of 65044223 is about 402.1637390621.

Adding to 65044223 its reverse (32244056), we get a palindrome (97288279).

The spelling of 65044223 in words is "sixty-five million, forty-four thousand, two hundred twenty-three".