4068385 has 4 divisors (see below), whose sum is σ = 4882068. Its totient is φ = 3254704.

The previous prime is 4068373. The next prime is 4068419. The reversal of 4068385 is 5838604.

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 2972176 + 1096209 = 1724^2 + 1047^2 .

It is a cyclic number.

It is not a de Polignac number, because 4068385 - 2⁵ = 4068353 is a prime.

It is a Duffinian number.

4068385 is a lucky number.

It is a plaindrome in base 15.

It is a self number, because there is not a number n which added to its sum of digits gives 4068385.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 406834 + ... + 406843.

It is an arithmetic number, because the mean of its divisors is an integer number (1220517).

Almost surely, 2^4068385 is an apocalyptic number.

It is an amenable number.

4068385 is a deficient number, since it is larger than the sum of its proper divisors (813683).

4068385 is an equidigital number, since it uses as much as digits as its factorization.

4068385 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 813682.

The product of its (nonzero) digits is 23040, while the sum is 34.

The square root of 4068385 is about 2017.0237975790. The cubic root of 4068385 is about 159.6396185796.

The spelling of 4068385 in words is "four million, sixty-eight thousand, three hundred eighty-five".