4068681 has 4 divisors (see below), whose sum is σ = 5424912. Its totient is φ = 2712452.

The previous prime is 4068667. The next prime is 4068683. The reversal of 4068681 is 1868604.

4068681 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-4068681 is a prime.

It is a super-2 number, since 2×4068681² = 33108330159522, which contains 22 as substring.

It is an Ulam number.

It is a D-number.

It is not an unprimeable number, because it can be changed into a prime (4068683) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 678111 + ... + 678116.

It is an arithmetic number, because the mean of its divisors is an integer number (1356228).

Almost surely, 2^4068681 is an apocalyptic number.

It is an amenable number.

4068681 is a deficient number, since it is larger than the sum of its proper divisors (1356231).

4068681 is a wasteful number, since it uses less digits than its factorization.

4068681 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1356230.

The product of its (nonzero) digits is 9216, while the sum is 33.

The square root of 4068681 is about 2017.0971716801. The cubic root of 4068681 is about 159.6434900734.

The spelling of 4068681 in words is "four million, sixty-eight thousand, six hundred eighty-one".