68686608 has 20 divisors (see below), whose sum is σ = 177440528. Its totient is φ = 22895520.

The previous prime is 68686559. The next prime is 68686627. The reversal of 68686608 is 80668686.

It is a Harshad number since it is a multiple of its sum of digits (48), and also a Moran number because the ratio is a prime number: 1430971 = 68686608 / (6 + 8 + 6 + 8 + 6 + 6 + 0 + 8).

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 3 ways as a sum of consecutive naturals, for example, 715438 + ... + 715533.

Almost surely, 2^68686608 is an apocalyptic number.

It is an amenable number.

68686608 is an abundant number, since it is smaller than the sum of its proper divisors (108753920).

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

68686608 is a wasteful number, since it uses less digits than its factorization.

68686608 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1430982 (or 1430976 counting only the distinct ones).

The product of its (nonzero) digits is 663552, while the sum is 48.

The square root of 68686608 is about 8287.7384128603. The cubic root of 68686608 is about 409.5346852744.

The spelling of 68686608 in words is "sixty-eight million, six hundred eighty-six thousand, six hundred eight".