668850223208 has 16 divisors (see below), whose sum is σ = 1255225018500. Its totient is φ = 334123551616.

The previous prime is 668850223207. The next prime is 668850223267. The reversal of 668850223208 is 802322058866.

It is a happy number.

668850223208 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 668270280484 + 579942724 = 817478^2 + 24082^2 .

It is a super-2 number, since 2×668850223208² (a number of 24 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (668850223207) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 37685573 + ... + 37703316.

Almost surely, 2^668850223208 is an apocalyptic number.

It is an amenable number.

668850223208 is a deficient number, since it is larger than the sum of its proper divisors (586374795292).

668850223208 is a wasteful number, since it uses less digits than its factorization.

668850223208 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 75390004 (or 75390000 counting only the distinct ones).

The product of its (nonzero) digits is 2211840, while the sum is 50.

The spelling of 668850223208 in words is "six hundred sixty-eight billion, eight hundred fifty million, two hundred twenty-three thousand, two hundred eight".