67989812 has 24 divisors (see below), whose sum is σ = 130757760. Its totient is φ = 30676160.

The previous prime is 67989787. The next prime is 67989821. The reversal of 67989812 is 21898976.

It is a super-2 number, since 2×67989812² = 9245229071590688, which contains 22 as substring.

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, 389 + ... + 11667.

It is an arithmetic number, because the mean of its divisors is an integer number (5448240).

Almost surely, 2^67989812 is an apocalyptic number.

It is an amenable number.

67989812 is a deficient number, since it is larger than the sum of its proper divisors (62767948).

67989812 is a wasteful number, since it uses less digits than its factorization.

67989812 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11431 (or 11429 counting only the distinct ones).

The product of its digits is 435456, while the sum is 50.

The square root of 67989812 is about 8245.5934898587. The cubic root of 67989812 is about 408.1451249079.

The spelling of 67989812 in words is "sixty-seven million, nine hundred eighty-nine thousand, eight hundred twelve".