68688108 has 48 divisors (see below), whose sum is σ = 178536960. Its totient is φ = 22837392.

The previous prime is 68688107. The next prime is 68688131. The reversal of 68688108 is 80188686.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68688107) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 69385 + ... + 70367.

It is an arithmetic number, because the mean of its divisors is an integer number (3719520).

Almost surely, 2^68688108 is an apocalyptic number.

It is an amenable number.

68688108 is an abundant number, since it is smaller than the sum of its proper divisors (109848852).

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

68688108 is a wasteful number, since it uses less digits than its factorization.

68688108 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1643 (or 1635 counting only the distinct ones).

The product of its (nonzero) digits is 147456, while the sum is 45.

The square root of 68688108 is about 8287.8289075004. The cubic root of 68688108 is about 409.5376664356.

The spelling of 68688108 in words is "sixty-eight million, six hundred eighty-eight thousand, one hundred eight".