67081968 has 60 divisors (see below), whose sum is σ = 188668480. Its totient is φ = 22249728.

The previous prime is 67081957. The next prime is 67082003. The reversal of 67081968 is 86918076.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 31068 + ... + 33156.

Almost surely, 2^67081968 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 67081968, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (94334240).

67081968 is an abundant number, since it is smaller than the sum of its proper divisors (121586512).

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

67081968 is a wasteful number, since it uses less digits than its factorization.

67081968 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2326 (or 2317 counting only the distinct ones).

The product of its (nonzero) digits is 145152, while the sum is 45.

The square root of 67081968 is about 8190.3582339236. The cubic root of 67081968 is about 406.3203728819.

The spelling of 67081968 in words is "sixty-seven million, eighty-one thousand, nine hundred sixty-eight".