68005756 has 48 divisors (see below), whose sum is σ = 152861184. Its totient is φ = 25730496.

The previous prime is 68005753. The next prime is 68005771. The reversal of 68005756 is 65750086.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68005753) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4311 + ... + 12433.

It is an arithmetic number, because the mean of its divisors is an integer number (3184608).

Almost surely, 2^68005756 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 68005756, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (76430592).

68005756 is an abundant number, since it is smaller than the sum of its proper divisors (84855428).

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

68005756 is a wasteful number, since it uses less digits than its factorization.

68005756 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8170 (or 8168 counting only the distinct ones).

The product of its (nonzero) digits is 50400, while the sum is 37.

The square root of 68005756 is about 8246.5602526144. The cubic root of 68005756 is about 408.1770265368.

The spelling of 68005756 in words is "sixty-eight million, five thousand, seven hundred fifty-six".