68705808 has 80 divisors (see below), whose sum is σ = 183202560. Its totient is φ = 22177792.

The previous prime is 68705783. The next prime is 68705831. The reversal of 68705808 is 80850786.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 68705808.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 287353 + ... + 287591.

It is an arithmetic number, because the mean of its divisors is an integer number (2290032).

Almost surely, 2^68705808 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 68705808, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (91601280).

68705808 is an abundant number, since it is smaller than the sum of its proper divisors (114496752).

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

68705808 is a wasteful number, since it uses less digits than its factorization.

68705808 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 416 (or 410 counting only the distinct ones).

The product of its (nonzero) digits is 107520, while the sum is 42.

The square root of 68705808 is about 8288.8966696419. The cubic root of 68705808 is about 409.5728408608.

The spelling of 68705808 in words is "sixty-eight million, seven hundred five thousand, eight hundred eight".