68258816 has 44 divisors (see below), whose sum is σ = 137558400. Its totient is φ = 33853440.

The previous prime is 68258789. The next prime is 68258819. The reversal of 68258816 is 61885286.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68258819) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 195410 + ... + 195758.

Almost surely, 2^68258816 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 68258816, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (68779200).

68258816 is an abundant number, since it is smaller than the sum of its proper divisors (69299584).

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

68258816 is a wasteful number, since it uses less digits than its factorization.

68258816 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 560 (or 542 counting only the distinct ones).

The product of its digits is 184320, while the sum is 44.

The square root of 68258816 is about 8261.8893722925. The cubic root of 68258816 is about 408.6826965720.

The spelling of 68258816 in words is "sixty-eight million, two hundred fifty-eight thousand, eight hundred sixteen".