68705585 has 32 divisors (see below), whose sum is σ = 95128992. Its totient is φ = 47185920.

The previous prime is 68705563. The next prime is 68705591. The reversal of 68705585 is 58550786.

It can be written as a sum of positive squares in 16 ways, for example, as 6105841 + 62599744 = 2471^2 + 7912^2 .

It is not a de Polignac number, because 68705585 - 2⁶ = 68705521 is a prime.

It is a Smith number, since the sum of its digits (44) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is an unprimeable number.

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 31 ways as a sum of consecutive naturals, for example, 106865 + ... + 107505.

It is an arithmetic number, because the mean of its divisors is an integer number (2972781).

Almost surely, 2^68705585 is an apocalyptic number.

68705585 is a gapful number since it is divisible by the number (65) formed by its first and last digit.

It is an amenable number.

68705585 is a deficient number, since it is larger than the sum of its proper divisors (26423407).

68705585 is a wasteful number, since it uses less digits than its factorization.

68705585 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 773.

The product of its (nonzero) digits is 336000, while the sum is 44.

The square root of 68705585 is about 8288.8832179009. The cubic root of 68705585 is about 409.5723977403.

The spelling of 68705585 in words is "sixty-eight million, seven hundred five thousand, five hundred eighty-five".