68385605 has 8 divisors (see below), whose sum is σ = 82662552. Its totient is φ = 54308608.

The previous prime is 68385599. The next prime is 68385607. The reversal of 68385605 is 50658386.

It can be written as a sum of positive squares in 4 ways, for example, as 4401604 + 63984001 = 2098^2 + 7999^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 68385605 - 2²² = 64191301 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68385607) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 49232 + ... + 50601.

It is an arithmetic number, because the mean of its divisors is an integer number (10332819).

Almost surely, 2^68385605 is an apocalyptic number.

It is an amenable number.

68385605 is a deficient number, since it is larger than the sum of its proper divisors (14276947).

68385605 is a wasteful number, since it uses less digits than its factorization.

68385605 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 99975.

The product of its (nonzero) digits is 172800, while the sum is 41.

The square root of 68385605 is about 8269.5589362432. The cubic root of 68385605 is about 408.9355792712.

The spelling of 68385605 in words is "sixty-eight million, three hundred eighty-five thousand, six hundred five".