67988856 has 64 divisors (see below), whose sum is σ = 183859200. Its totient is φ = 20827008.

The previous prime is 67988839. The next prime is 67988863. The reversal of 67988856 is 65888976.

It is a junction number, because it is equal to n+sod(n) for n = 67988796 and 67988805.

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, 111705 + ... + 112311.

It is an arithmetic number, because the mean of its divisors is an integer number (2872800).

Almost surely, 2^67988856 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 67988856, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (91929600).

67988856 is an abundant number, since it is smaller than the sum of its proper divisors (115870344).

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

67988856 is a wasteful number, since it uses less digits than its factorization.

67988856 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 988 (or 984 counting only the distinct ones).

The product of its digits is 5806080, while the sum is 57.

The square root of 67988856 is about 8245.5355192977. The cubic root of 67988856 is about 408.1432119322.

The spelling of 67988856 in words is "sixty-seven million, nine hundred eighty-eight thousand, eight hundred fifty-six".