68756680 has 32 divisors (see below), whose sum is σ = 160039800. Its totient is φ = 26553856.

The previous prime is 68756647. The next prime is 68756707. The reversal of 68756680 is 8665786.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 56881764 + 11874916 = 7542^2 + 3446^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 68756680.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 28477 + ... + 30796.

Almost surely, 2^68756680 is an apocalyptic number.

It is an amenable number.

68756680 is an abundant number, since it is smaller than the sum of its proper divisors (91283120).

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

68756680 is a wasteful number, since it uses less digits than its factorization.

68756680 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 59313 (or 59309 counting only the distinct ones).

The product of its (nonzero) digits is 483840, while the sum is 46.

The square root of 68756680 is about 8291.9647852605. The cubic root of 68756680 is about 409.6739029096.

The spelling of 68756680 in words is "sixty-eight million, seven hundred fifty-six thousand, six hundred eighty".