68784 has 20 divisors (see below), whose sum is σ = 177816. Its totient is φ = 22912.

The previous prime is 68777. The next prime is 68791. The reversal of 68784 is 48786.

It is an interprime number because it is at equal distance from previous prime (68777) and next prime (68791).

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 669 + ... + 764.

2⁶⁸⁷⁸⁴ is an apocalyptic number.

It is an amenable number.

68784 is an abundant number, since it is smaller than the sum of its proper divisors (109032).

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

It is a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (88908).

68784 is a wasteful number, since it uses less digits than its factorization.

68784 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1444 (or 1438 counting only the distinct ones).

The product of its digits is 10752, while the sum is 33.

The square root of 68784 is about 262.2670394846. The cubic root of 68784 is about 40.9728156106.

The spelling of 68784 in words is "sixty-eight thousand, seven hundred eighty-four".