3621624 has 16 divisors (see below), whose sum is σ = 9054120. Its totient is φ = 1207200.

The previous prime is 3621623. The next prime is 3621643. The reversal of 3621624 is 4261263.

It is a Harshad number since it is a multiple of its sum of digits (24), and also a Moran number because the ratio is a prime number: 150901 = 3621624 / (3 + 6 + 2 + 1 + 6 + 2 + 4).

It is a nude number because it is divisible by every one of its digits.

It is a d-powerful number, because it can be written as 3⁵ + 6⁸ + 2¹⁷ + 1 + 6⁸ + 2¹⁷ + 4 .

It is a junction number, because it is equal to n+sod(n) for n = 3621594 and 3621603.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3621623) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 75427 + ... + 75474.

Almost surely, 2^3621624 is an apocalyptic number.

It is an amenable number.

3621624 is an abundant number, since it is smaller than the sum of its proper divisors (5432496).

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

3621624 is a wasteful number, since it uses less digits than its factorization.

3621624 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 150910 (or 150906 counting only the distinct ones).

The product of its digits is 1728, while the sum is 24.

The square root of 3621624 is about 1903.0564889146. The cubic root of 3621624 is about 153.5681384651.

Adding to 3621624 its reverse (4261263), we get a palindrome (7882887).

The spelling of 3621624 in words is "three million, six hundred twenty-one thousand, six hundred twenty-four".