67989558 has 48 divisors (see below), whose sum is σ = 170357040. Its totient is φ = 17930304.

The previous prime is 67989557. The next prime is 67989599. The reversal of 67989558 is 85598976.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 67989498 and 67989507.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (67989553) 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 23 ways as a sum of consecutive naturals, for example, 5073 + ... + 12716.

It is an arithmetic number, because the mean of its divisors is an integer number (3549105).

Almost surely, 2^67989558 is an apocalyptic number.

67989558 is an abundant number, since it is smaller than the sum of its proper divisors (102367482).

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

67989558 is a wasteful number, since it uses less digits than its factorization.

67989558 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17821 (or 17814 counting only the distinct ones).

The product of its digits is 5443200, while the sum is 57.

The square root of 67989558 is about 8245.5780876783. The cubic root of 67989558 is about 408.1446166504.

The spelling of 67989558 in words is "sixty-seven million, nine hundred eighty-nine thousand, five hundred fifty-eight".