668273206 has 16 divisors (see below), whose sum is σ = 1083688560. Its totient is φ = 307994400.

The previous prime is 668273197. The next prime is 668273233. The reversal of 668273206 is 602372866.

668273206 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 236245 + ... + 239056.

It is an arithmetic number, because the mean of its divisors is an integer number (67730535).

Almost surely, 2^668273206 is an apocalyptic number.

668273206 is a deficient number, since it is larger than the sum of its proper divisors (415415354).

668273206 is a wasteful number, since it uses less digits than its factorization.

668273206 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 475359.

The product of its (nonzero) digits is 145152, while the sum is 40.

The square root of 668273206 is about 25850.9807550894. The cubic root of 668273206 is about 874.2816225075.

The spelling of 668273206 in words is "six hundred sixty-eight million, two hundred seventy-three thousand, two hundred six".