6668333338 has 4 divisors (see below), whose sum is σ = 10002500010. Its totient is φ = 3334166668.

The previous prime is 6668333333. The next prime is 6668333363. The reversal of 6668333338 is 8333338666.

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

It can be written as a sum of positive squares in only one way, i.e., 5136158889 + 1532174449 = 71667^2 + 39143^2 .

It is a Smith number, since the sum of its digits (49) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a junction number, because it is equal to n+sod(n) for n = 6668333291 and 6668333300.

It is not an unprimeable number, because it can be changed into a prime (6668333333) 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 as a sum of consecutive naturals, namely, 1667083333 + ... + 1667083336.

Almost surely, 2^6668333338 is an apocalyptic number.

6668333338 is a deficient number, since it is larger than the sum of its proper divisors (3334166672).

6668333338 is a wasteful number, since it uses less digits than its factorization.

6668333338 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3334166671.

The product of its digits is 3359232, while the sum is 49.

The square root of 6668333338 is about 81659.8636907998. The cubic root of 6668333338 is about 1882.2288844712.

The spelling of 6668333338 in words is "six billion, six hundred sixty-eight million, three hundred thirty-three thousand, three hundred thirty-eight".