68717808 has 100 divisors (see below), whose sum is σ = 210656160. Its totient is φ = 21551616.

The previous prime is 68717783. The next prime is 68717821. The reversal of 68717808 is 80871786.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 20473 + ... + 23591.

Almost surely, 2^68717808 is an apocalyptic number.

68717808 is a gapful number since it is divisible by the number (68) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 68717808, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (105328080).

68717808 is an abundant number, since it is smaller than the sum of its proper divisors (141938352).

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

68717808 is a wasteful number, since it uses less digits than its factorization.

68717808 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3156 (or 3141 counting only the distinct ones).

The product of its (nonzero) digits is 150528, while the sum is 45.

The square root of 68717808 is about 8289.6204979480. The cubic root of 68717808 is about 409.5966844926.

The spelling of 68717808 in words is "sixty-eight million, seven hundred seventeen thousand, eight hundred eight".