4084681 has 4 divisors (see below), whose sum is σ = 4088772. Its totient is φ = 4080592.

The previous prime is 4084667. The next prime is 4084687. The reversal of 4084681 is 1864804.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 1245456 + 2839225 = 1116^2 + 1685^2 .

It is a cyclic number.

It is not a de Polignac number, because 4084681 - 2⁹ = 4084169 is a prime.

It is a super-2 number, since 2×4084681² = 33369237743522, which contains 22 as substring.

It is a Smith number, since the sum of its digits (31) 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 not an unprimeable number, because it can be changed into a prime (4084687) 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, 555 + ... + 2911.

It is an arithmetic number, because the mean of its divisors is an integer number (1022193).

Almost surely, 2^4084681 is an apocalyptic number.

It is an amenable number.

4084681 is a deficient number, since it is larger than the sum of its proper divisors (4091).

4084681 is a wasteful number, since it uses less digits than its factorization.

4084681 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4090.

The product of its (nonzero) digits is 6144, while the sum is 31.

The square root of 4084681 is about 2021.0593756741. The cubic root of 4084681 is about 159.8524812181.

The spelling of 4084681 in words is "four million, eighty-four thousand, six hundred eighty-one".