68105568 has 24 divisors (see below), whose sum is σ = 178777368. Its totient is φ = 22701824.

The previous prime is 68105563. The next prime is 68105603. The reversal of 68105568 is 86550186.

It is a tau number, because it is divible by the number of its divisors (24).

It is a Smith number, since the sum of its digits (39) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68105563) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 354621 + ... + 354812.

It is an arithmetic number, because the mean of its divisors is an integer number (7449057).

Almost surely, 2^68105568 is an apocalyptic number.

It is an amenable number.

68105568 is an abundant number, since it is smaller than the sum of its proper divisors (110671800).

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

68105568 is a wasteful number, since it uses less digits than its factorization.

68105568 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 709446 (or 709438 counting only the distinct ones).

The product of its (nonzero) digits is 57600, while the sum is 39.

The square root of 68105568 is about 8252.6097690367. The cubic root of 68105568 is about 408.3766226307.

The spelling of 68105568 in words is "sixty-eight million, one hundred five thousand, five hundred sixty-eight".