668222305106 has 8 divisors (see below), whose sum is σ = 1061294249340. Its totient is φ = 314457555328.

The previous prime is 668222305097. The next prime is 668222305139. The reversal of 668222305106 is 601503222866.

It is a happy number.

668222305106 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 663939780625 + 4282524481 = 814825^2 + 65441^2 .

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

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9826798571 + ... + 9826798638.

Almost surely, 2^668222305106 is an apocalyptic number.

668222305106 is a deficient number, since it is larger than the sum of its proper divisors (393071944234).

668222305106 is a wasteful number, since it uses less digits than its factorization.

668222305106 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19653597228.

The product of its (nonzero) digits is 207360, while the sum is 41.

The spelling of 668222305106 in words is "six hundred sixty-eight billion, two hundred twenty-two million, three hundred five thousand, one hundred six".