168408616 has 16 divisors (see below), whose sum is σ = 325952640. Its totient is φ = 81487920.

The previous prime is 168408589. The next prime is 168408619. The reversal of 168408616 is 616804861.

It is a super-2 number, since 2×168408616² = 56722923886070912, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (168408619) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 339286 + ... + 339781.

It is an arithmetic number, because the mean of its divisors is an integer number (20372040).

Almost surely, 2^168408616 is an apocalyptic number.

It is an amenable number.

168408616 is a deficient number, since it is larger than the sum of its proper divisors (157544024).

168408616 is a wasteful number, since it uses less digits than its factorization.

168408616 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 679104 (or 679100 counting only the distinct ones).

The product of its (nonzero) digits is 55296, while the sum is 40.

The square root of 168408616 is about 12977.2345282036. The cubic root of 168408616 is about 552.2318304379.

The spelling of 168408616 in words is "one hundred sixty-eight million, four hundred eight thousand, six hundred sixteen".