6639223033 has 4 divisors (see below), whose sum is σ = 6927884928. Its totient is φ = 6350561140.

The previous prime is 6639223021. The next prime is 6639223039. The reversal of 6639223033 is 3303229366.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 6639223033 - 2⁵ = 6639223001 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 6639222983 and 6639223001.

It is not an unprimeable number, because it can be changed into a prime (6639223039) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 144330913 + ... + 144330958.

It is an arithmetic number, because the mean of its divisors is an integer number (1731971232).

Almost surely, 2^6639223033 is an apocalyptic number.

It is an amenable number.

6639223033 is a deficient number, since it is larger than the sum of its proper divisors (288661895).

6639223033 is a wasteful number, since it uses less digits than its factorization.

6639223033 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 288661894.

The product of its (nonzero) digits is 104976, while the sum is 37.

The square root of 6639223033 is about 81481.4275341320. The cubic root of 6639223033 is about 1879.4859611103.

The spelling of 6639223033 in words is "six billion, six hundred thirty-nine million, two hundred twenty-three thousand, thirty-three".