68756688 has 400 divisors, whose sum is σ = 272232576. Its totient is φ = 16174080.

The previous prime is 68756647. The next prime is 68756707. The reversal of 68756688 is 88665786.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 1297270 + ... + 1297322.

Almost surely, 2^68756688 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 68756688, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (136116288).

68756688 is an abundant number, since it is smaller than the sum of its proper divisors (203475888).

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

68756688 is a wasteful number, since it uses less digits than its factorization.

68756688 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 104 (or 89 counting only the distinct ones).

The product of its digits is 3870720, while the sum is 54.

The square root of 68756688 is about 8291.9652676552. The cubic root of 68756688 is about 409.6739187985.

It can be divided in two parts, 687 and 56688, that added together give a palindrome (57375).

The spelling of 68756688 in words is "sixty-eight million, seven hundred fifty-six thousand, six hundred eighty-eight".