68765568 has 64 divisors (see below), whose sum is σ = 184187520. Its totient is φ = 22730240.

The previous prime is 68765519. The next prime is 68765591. The reversal of 68765568 is 86556786.

It is a tau number, because it is divible by the number of its divisors (64).

It is a self number, because there is not a number n which added to its sum of digits gives 68765568.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 49621 + ... + 50987.

It is an arithmetic number, because the mean of its divisors is an integer number (2877930).

Almost surely, 2^68765568 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 68765568, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (92093760).

68765568 is an abundant number, since it is smaller than the sum of its proper divisors (115421952).

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

68765568 is a wasteful number, since it uses less digits than its factorization.

68765568 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1515 (or 1503 counting only the distinct ones).

The product of its digits is 2419200, while the sum is 51.

The square root of 68765568 is about 8292.5007084715. The cubic root of 68765568 is about 409.6915546479.

The spelling of 68765568 in words is "sixty-eight million, seven hundred sixty-five thousand, five hundred sixty-eight".