6668223534 has 64 divisors (see below), whose sum is σ = 17028910080. Its totient is φ = 1894661280.

The previous prime is 6668223487. The next prime is 6668223553. The reversal of 6668223534 is 4353228666.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 6668223534.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 19687 + ... + 117149.

It is an arithmetic number, because the mean of its divisors is an integer number (266076720).

Almost surely, 2^6668223534 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 6668223534, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (8514455040).

6668223534 is an abundant number, since it is smaller than the sum of its proper divisors (10360686546).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

6668223534 is a wasteful number, since it uses less digits than its factorization.

6668223534 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 97662 (or 97656 counting only the distinct ones).

The product of its digits is 1244160, while the sum is 45.

The square root of 6668223534 is about 81659.1913626384. The cubic root of 6668223534 is about 1882.2185531842.

The spelling of 6668223534 in words is "six billion, six hundred sixty-eight million, two hundred twenty-three thousand, five hundred thirty-four".