4068985 has 4 divisors (see below), whose sum is σ = 4882788. Its totient is φ = 3255184.

The previous prime is 4068979. The next prime is 4068989. The reversal of 4068985 is 5898604.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 2458624 + 1610361 = 1568^2 + 1269^2 .

It is a cyclic number.

It is not a de Polignac number, because 4068985 - 2⁹ = 4068473 is a prime.

It is a Smith number, since the sum of its digits (40) 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.

4068985 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (4068989) 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 3 ways as a sum of consecutive naturals, for example, 406894 + ... + 406903.

It is an arithmetic number, because the mean of its divisors is an integer number (1220697).

Almost surely, 2^4068985 is an apocalyptic number.

It is an amenable number.

4068985 is a deficient number, since it is larger than the sum of its proper divisors (813803).

4068985 is an equidigital number, since it uses as much as digits as its factorization.

4068985 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 813802.

The product of its (nonzero) digits is 69120, while the sum is 40.

The square root of 4068985 is about 2017.1725260869. The cubic root of 4068985 is about 159.6474660066.

The spelling of 4068985 in words is "four million, sixty-eight thousand, nine hundred eighty-five".