668366106 has 8 divisors (see below), whose sum is σ = 1336732224. Its totient is φ = 222788700.

The previous prime is 668366099. The next prime is 668366117. The reversal of 668366106 is 601663866.

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

668366106 is an admirable number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 55697170 + ... + 55697181.

It is an arithmetic number, because the mean of its divisors is an integer number (167091528).

Almost surely, 2^668366106 is an apocalyptic number.

668366106 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

668366106 is a wasteful number, since it uses less digits than its factorization.

668366106 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 111394356.

The product of its (nonzero) digits is 186624, while the sum is 42.

The square root of 668366106 is about 25852.7775296969. Note that the first 3 decimals coincide. The cubic root of 668366106 is about 874.3221333837.

The spelling of 668366106 in words is "six hundred sixty-eight million, three hundred sixty-six thousand, one hundred six".