3681256 has 8 divisors (see below), whose sum is σ = 6902370. Its totient is φ = 1840624.

The previous prime is 3681253. The next prime is 3681277. The reversal of 3681256 is 6521863.

3681256 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 3118756 + 562500 = 1766^2 + 750^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is an Ulam 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 (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 230071 + ... + 230086.

Almost surely, 2^3681256 is an apocalyptic number.

It is an amenable number.

3681256 is a deficient number, since it is larger than the sum of its proper divisors (3221114).

3681256 is a wasteful number, since it uses less digits than its factorization.

3681256 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 460163 (or 460159 counting only the distinct ones).

The product of its digits is 8640, while the sum is 31.

The square root of 3681256 is about 1918.6599490269. The cubic root of 3681256 is about 154.4064151182.

The spelling of 3681256 in words is "three million, six hundred eighty-one thousand, two hundred fifty-six".