68786688 has 80 divisors (see below), whose sum is σ = 192978720. Its totient is φ = 21712896.

The previous prime is 68786681. The next prime is 68786693. The reversal of 68786688 is 88668786.

It is a Harshad number since it is a multiple of its sum of digits (57).

It is not an unprimeable number, because it can be changed into a prime (68786681) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 28006 + ... + 30362.

It is an arithmetic number, because the mean of its divisors is an integer number (2412234).

Almost surely, 2^68786688 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 68786688, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (96489360).

68786688 is an abundant number, since it is smaller than the sum of its proper divisors (124192032).

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

68786688 is a wasteful number, since it uses less digits than its factorization.

68786688 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2397 (or 2381 counting only the distinct ones).

The product of its digits is 6193152, while the sum is 57.

The square root of 68786688 is about 8293.7740504550. The cubic root of 68786688 is about 409.7334932722.

It can be divided in two parts, 6878 and 6688, that multiplied together give a palindrome (46000064).

The spelling of 68786688 in words is "sixty-eight million, seven hundred eighty-six thousand, six hundred eighty-eight".