68787768 has 96 divisors (see below), whose sum is σ = 207046800. Its totient is φ = 18966528.

The previous prime is 68787751. The next prime is 68787769. The reversal of 68787768 is 86778786.

It is a nude number because it is divisible by every one of its digits.

Its product of digits (6322176) is a multiple of the sum of its prime divisors (2058).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68787769) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 33096 + ... + 35112.

Almost surely, 2^68787768 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 68787768, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (103523400).

68787768 is an abundant number, since it is smaller than the sum of its proper divisors (138259032).

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

68787768 is a wasteful number, since it uses less digits than its factorization.

68787768 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2069 (or 2058 counting only the distinct ones).

The product of its digits is 6322176, while the sum is 57.

The square root of 68787768 is about 8293.8391592796. The cubic root of 68787768 is about 409.7356376302.

The spelling of 68787768 in words is "sixty-eight million, seven hundred eighty-seven thousand, seven hundred sixty-eight".