67989980 has 24 divisors (see below), whose sum is σ = 150294480. Its totient is φ = 25764480.

The previous prime is 67989967. The next prime is 67989983. The reversal of 67989980 is 8998976.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (67989983) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 89081 + ... + 89840.

It is an arithmetic number, because the mean of its divisors is an integer number (6262270).

Almost surely, 2^67989980 is an apocalyptic number.

It is an amenable number.

67989980 is an abundant number, since it is smaller than the sum of its proper divisors (82304500).

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

67989980 is a wasteful number, since it uses less digits than its factorization.

67989980 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 178949 (or 178947 counting only the distinct ones).

The product of its (nonzero) digits is 1959552, while the sum is 56.

The square root of 67989980 is about 8245.6036771118. The cubic root of 67989980 is about 408.1454610775.

The spelling of 67989980 in words is "sixty-seven million, nine hundred eighty-nine thousand, nine hundred eighty".