66223633 has 8 divisors (see below), whose sum is σ = 75807360. Its totient is φ = 56670720.

The previous prime is 66223609. The next prime is 66223637. The reversal of 66223633 is 33632266.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 66223633 - 2⁹ = 66223121 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 66223595 and 66223604.

It is not an unprimeable number, because it can be changed into a prime (66223637) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2893 + ... + 11866.

It is an arithmetic number, because the mean of its divisors is an integer number (9475920).

Almost surely, 2^66223633 is an apocalyptic number.

It is an amenable number.

66223633 is a deficient number, since it is larger than the sum of its proper divisors (9583727).

66223633 is a wasteful number, since it uses less digits than its factorization.

66223633 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15407.

The product of its digits is 23328, while the sum is 31.

The square root of 66223633 is about 8137.7904249249. The cubic root of 66223633 is about 404.5799292301.

Adding to 66223633 its reverse (33632266), we get a palindrome (99855899).

The spelling of 66223633 in words is "sixty-six million, two hundred twenty-three thousand, six hundred thirty-three".