67989628 has 24 divisors (see below), whose sum is σ = 137386592. Its totient is φ = 28836864.

The previous prime is 67989617. The next prime is 67989629. The reversal of 67989628 is 82698976.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (67989629) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9801 + ... + 15232.

Almost surely, 2^67989628 is an apocalyptic number.

It is an amenable number.

67989628 is an abundant number, since it is smaller than the sum of its proper divisors (69396964).

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

67989628 is a wasteful number, since it uses less digits than its factorization.

67989628 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25141 (or 25139 counting only the distinct ones).

The product of its digits is 2612736, while the sum is 55.

The square root of 67989628 is about 8245.5823323765. The cubic root of 67989628 is about 408.1447567215.

The spelling of 67989628 in words is "sixty-seven million, nine hundred eighty-nine thousand, six hundred twenty-eight".