168351668 has 12 divisors (see below), whose sum is σ = 295257732. Its totient is φ = 83992320.

The previous prime is 168351653. The next prime is 168351679. The reversal of 168351668 is 866153861.

168351668 is digitally balanced in base 3, 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 68591524 + 99760144 = 8282^2 + 9988^2 .

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 43805 + ... + 47492.

It is an arithmetic number, because the mean of its divisors is an integer number (24604811).

Almost surely, 2^168351668 is an apocalyptic number.

It is an amenable number.

168351668 is a deficient number, since it is larger than the sum of its proper divisors (126906064).

168351668 is a wasteful number, since it uses less digits than its factorization.

168351668 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 91762 (or 91760 counting only the distinct ones).

The product of its digits is 207360, while the sum is 44.

The square root of 168351668 is about 12975.0401926160. The cubic root of 168351668 is about 552.1695770043.

The spelling of 168351668 in words is "one hundred sixty-eight million, three hundred fifty-one thousand, six hundred sixty-eight".