3681243 has 6 divisors (see below), whose sum is σ = 5317364. Its totient is φ = 2454156.

The previous prime is 3681239. The next prime is 3681253. The reversal of 3681243 is 3421863.

It is a happy number.

It is not a de Polignac number, because 3681243 - 2² = 3681239 is a prime.

It is a d-powerful number, because it can be written as 3⁶ + 6⁴ + 8⁷ + 1 + 2¹¹ + 4¹⁰ + 3¹² .

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3681253) 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, 204505 + ... + 204522.

Almost surely, 2^3681243 is an apocalyptic number.

3681243 is a deficient number, since it is larger than the sum of its proper divisors (1636121).

3681243 is a wasteful number, since it uses less digits than its factorization.

3681243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 409033 (or 409030 counting only the distinct ones).

The product of its digits is 3456, while the sum is 27.

The square root of 3681243 is about 1918.6565612428. The cubic root of 3681243 is about 154.4062333609.

The spelling of 3681243 in words is "three million, six hundred eighty-one thousand, two hundred forty-three".