68985585 has 24 divisors (see below), whose sum is σ = 119956200. Its totient is φ = 36675072.

The previous prime is 68985583. The next prime is 68985607. The reversal of 68985585 is 58558986.

68985585 is a `hidden beast` number, since 6 + 89 + 8 + 558 + 5 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 7017201 + 61968384 = 2649^2 + 7872^2 .

It is not a de Polignac number, because 68985585 - 2¹ = 68985583 is a prime.

It is not an unprimeable number, because it can be changed into a prime (68985583) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 12891 + ... + 17439.

It is an arithmetic number, because the mean of its divisors is an integer number (4998175).

Almost surely, 2^68985585 is an apocalyptic number.

It is an amenable number.

68985585 is a deficient number, since it is larger than the sum of its proper divisors (50970615).

68985585 is a wasteful number, since it uses less digits than its factorization.

68985585 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4897 (or 4894 counting only the distinct ones).

The product of its digits is 3456000, while the sum is 54.

The square root of 68985585 is about 8305.7561365598. The cubic root of 68985585 is about 410.1280286269.

The spelling of 68985585 in words is "sixty-eight million, nine hundred eighty-five thousand, five hundred eighty-five".