668068804226 has 8 divisors (see below), whose sum is σ = 1002108140544. Its totient is φ = 334032757380.

The previous prime is 668068804213. The next prime is 668068804231. The reversal of 668068804226 is 622408860866.

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

It is a super-3 number, since 3×668068804226³ (a number of 36 digits) contains 333 as substring.

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, 229010 + ... + 1178381.

It is an arithmetic number, because the mean of its divisors is an integer number (125263517568).

Almost surely, 2^668068804226 is an apocalyptic number.

668068804226 is a deficient number, since it is larger than the sum of its proper divisors (334039336318).

668068804226 is a wasteful number, since it uses less digits than its factorization.

668068804226 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1644736.

The product of its (nonzero) digits is 10616832, while the sum is 56.

The spelling of 668068804226 in words is "six hundred sixty-eight billion, sixty-eight million, eight hundred four thousand, two hundred twenty-six".