3681522 has 24 divisors (see below), whose sum is σ = 8590764. Its totient is φ = 1132704.

The previous prime is 3681511. The next prime is 3681523. The reversal of 3681522 is 2251863.

3681522 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 2 ways, for example, as 3059001 + 622521 = 1749^2 + 789^2 .

It is not an unprimeable number, because it can be changed into a prime (3681523) 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 11 ways as a sum of consecutive naturals, for example, 7633 + ... + 8100.

Almost surely, 2^3681522 is an apocalyptic number.

3681522 is an abundant number, since it is smaller than the sum of its proper divisors (4909242).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

3681522 is a wasteful number, since it uses less digits than its factorization.

3681522 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15754 (or 15751 counting only the distinct ones).

The product of its digits is 2880, while the sum is 27.

The square root of 3681522 is about 1918.7292669890. The cubic root of 3681522 is about 154.4101340588.

The spelling of 3681522 in words is "three million, six hundred eighty-one thousand, five hundred twenty-two".