67818816 has 112 divisors (see below), whose sum is σ = 214782400. Its totient is φ = 20860416.

The previous prime is 67818767. The next prime is 67818827. The reversal of 67818816 is 61881876.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 20955 + ... + 23973.

It is an arithmetic number, because the mean of its divisors is an integer number (1917700).

Almost surely, 2^67818816 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 67818816, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (107391200).

67818816 is an abundant number, since it is smaller than the sum of its proper divisors (146963584).

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

67818816 is a wasteful number, since it uses less digits than its factorization.

67818816 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3053 (or 3037 counting only the distinct ones).

The product of its digits is 129024, while the sum is 45.

The square root of 67818816 is about 8235.2180299006. The cubic root of 67818816 is about 407.8026727451.

The spelling of 67818816 in words is "sixty-seven million, eight hundred eighteen thousand, eight hundred sixteen".