4026681 has 6 divisors (see below), whose sum is σ = 5816330. Its totient is φ = 2684448.

The previous prime is 4026677. The next prime is 4026703. The reversal of 4026681 is 1866204.

It can be written as a sum of positive squares in only one way, i.e., 3980025 + 46656 = 1995^2 + 216^2 .

It is not a de Polignac number, because 4026681 - 2² = 4026677 is a prime.

It is a super-2 number, since 2×4026681² = 32428319751522, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (4026611) 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 5 ways as a sum of consecutive naturals, for example, 223696 + ... + 223713.

Almost surely, 2^4026681 is an apocalyptic number.

It is an amenable number.

4026681 is a deficient number, since it is larger than the sum of its proper divisors (1789649).

4026681 is a wasteful number, since it uses less digits than its factorization.

4026681 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 447415 (or 447412 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 27.

The square root of 4026681 is about 2006.6591638841. The cubic root of 4026681 is about 159.0922687429.

The spelling of 4026681 in words is "four million, twenty-six thousand, six hundred eighty-one".