3623521 has 16 divisors (see below), whose sum is σ = 4213440. Its totient is φ = 3084480.

The previous prime is 3623519. The next prime is 3623537. The reversal of 3623521 is 1253263.

3623521 = T₁₉₈ + T₁₉₉ + ... + T₃₀₈.

3623521 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 3623521 - 2¹ = 3623519 is a prime.

3623521 is a lucky number.

It is a junction number, because it is equal to n+sod(n) for n = 3623492 and 3623501.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3623821) 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 15 ways as a sum of consecutive naturals, for example, 11650 + ... + 11956.

It is an arithmetic number, because the mean of its divisors is an integer number (263340).

Almost surely, 2^3623521 is an apocalyptic number.

It is an amenable number.

3623521 is a deficient number, since it is larger than the sum of its proper divisors (589919).

3623521 is a wasteful number, since it uses less digits than its factorization.

3623521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 384.

The product of its digits is 1080, while the sum is 22.

The square root of 3623521 is about 1903.5548324122. The cubic root of 3623521 is about 153.5949466880.

Adding to 3623521 its reverse (1253263), we get a palindrome (4876784).

It can be divided in two parts, 362 and 3521, that added together give a palindrome (3883).

The spelling of 3623521 in words is "three million, six hundred twenty-three thousand, five hundred twenty-one".