168669816 has 64 divisors (see below), whose sum is σ = 482926080. Its totient is φ = 48090240.

The previous prime is 168669799. The next prime is 168669827. The reversal of 168669816 is 618966861.

168669816 is digitally balanced in base 3, 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 pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 121446 + ... + 122826.

It is an arithmetic number, because the mean of its divisors is an integer number (7545720).

Almost surely, 2^168669816 is an apocalyptic number.

It is an amenable number.

168669816 is an abundant number, since it is smaller than the sum of its proper divisors (314256264).

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

168669816 is a wasteful number, since it uses less digits than its factorization.

168669816 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2124 (or 2120 counting only the distinct ones).

The product of its digits is 746496, while the sum is 51.

The square root of 168669816 is about 12987.2944064574. The cubic root of 168669816 is about 552.5171848903.

The spelling of 168669816 in words is "one hundred sixty-eight million, six hundred sixty-nine thousand, eight hundred sixteen".