68256080 has 40 divisors (see below), whose sum is σ = 159210792. Its totient is φ = 27213824.

The previous prime is 68256059. The next prime is 68256107. The reversal of 68256080 is 8065286.

It can be written as a sum of positive squares in 4 ways, for example, as 20866624 + 47389456 = 4568^2 + 6884^2 .

It is a tau number, because it is divible by the number of its divisors (40).

It is a self number, because there is not a number n which added to its sum of digits gives 68256080.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 27032 + ... + 29448.

Almost surely, 2^68256080 is an apocalyptic number.

It is an amenable number.

68256080 is an abundant number, since it is smaller than the sum of its proper divisors (90954712).

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

68256080 is a wasteful number, since it uses less digits than its factorization.

68256080 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2783 (or 2777 counting only the distinct ones).

The product of its (nonzero) digits is 23040, while the sum is 35.

The square root of 68256080 is about 8261.7237910741. The cubic root of 68256080 is about 408.6772361257.

The spelling of 68256080 in words is "sixty-eight million, two hundred fifty-six thousand, eighty".