668700222 has 16 divisors (see below), whose sum is σ = 1338935952. Its totient is φ = 222644160.

The previous prime is 668700217. The next prime is 668700247. The reversal of 668700222 is 222007866.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 58279 + ... + 68802.

It is an arithmetic number, because the mean of its divisors is an integer number (83683497).

Almost surely, 2^668700222 is an apocalyptic number.

668700222 is an abundant number, since it is smaller than the sum of its proper divisors (670235730).

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

668700222 is a wasteful number, since it uses less digits than its factorization.

668700222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 127963.

The product of its (nonzero) digits is 16128, while the sum is 33.

The square root of 668700222 is about 25859.2386198821. The cubic root of 668700222 is about 874.4678002306.

The spelling of 668700222 in words is "six hundred sixty-eight million, seven hundred thousand, two hundred twenty-two".