68075568 has 90 divisors (see below), whose sum is σ = 209464892. Its totient is φ = 20623680.

The previous prime is 68075543. The next prime is 68075587. The reversal of 68075568 is 86557086.

68075568 is a `hidden beast` number, since 6 + 80 + 7 + 5 + 568 = 666.

It is an unprimeable number.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 15471 + ... + 19377.

Almost surely, 2^68075568 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 68075568, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (104732446).

68075568 is an abundant number, since it is smaller than the sum of its proper divisors (141389324).

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

68075568 is a wasteful number, since it uses less digits than its factorization.

68075568 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3943 (or 3923 counting only the distinct ones).

The product of its (nonzero) digits is 403200, while the sum is 45.

The square root of 68075568 is about 8250.7919619876. The cubic root of 68075568 is about 408.3166515282.

The spelling of 68075568 in words is "sixty-eight million, seventy-five thousand, five hundred sixty-eight".