67989688 has 32 divisors (see below), whose sum is σ = 142027200. Its totient is φ = 30296448.

The previous prime is 67989661. The next prime is 67989703. The reversal of 67989688 is 88698976.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 8256 + ... + 14287.

It is an arithmetic number, because the mean of its divisors is an integer number (4438350).

Almost surely, 2^67989688 is an apocalyptic number.

It is an amenable number.

67989688 is an abundant number, since it is smaller than the sum of its proper divisors (74037512).

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

67989688 is a wasteful number, since it uses less digits than its factorization.

67989688 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22591 (or 22587 counting only the distinct ones).

The product of its digits is 10450944, while the sum is 61.

The square root of 67989688 is about 8245.5859706876. The cubic root of 67989688 is about 408.1448767823.

It can be divided in two parts, 6798968 and 8, that added together give a palindrome (6798976).

The spelling of 67989688 in words is "sixty-seven million, nine hundred eighty-nine thousand, six hundred eighty-eight".