68817056 has 72 divisors (see below), whose sum is σ = 170261280. Its totient is φ = 26801280.

The previous prime is 68817053. The next prime is 68817061. The reversal of 68817056 is 65071886.

It is not an unprimeable number, because it can be changed into a prime (68817053) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 25835 + ... + 28373.

It is an arithmetic number, because the mean of its divisors is an integer number (2364740).

Almost surely, 2^68817056 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 68817056, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (85130640).

68817056 is an abundant number, since it is smaller than the sum of its proper divisors (101444224).

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

68817056 is a wasteful number, since it uses less digits than its factorization.

68817056 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2578 (or 2559 counting only the distinct ones).

The product of its (nonzero) digits is 80640, while the sum is 41.

The square root of 68817056 is about 8295.6046193150. The cubic root of 68817056 is about 409.7937808872.

The spelling of 68817056 in words is "sixty-eight million, eight hundred seventeen thousand, fifty-six".