3621534 has 48 divisors (see below), whose sum is σ = 8706432. Its totient is φ = 983664.

The previous prime is 3621529. The next prime is 3621559. The reversal of 3621534 is 4351263.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 22137 + ... + 22299.

It is an arithmetic number, because the mean of its divisors is an integer number (181384).

Almost surely, 2^3621534 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 3621534, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4353216).

3621534 is an abundant number, since it is smaller than the sum of its proper divisors (5084898).

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

3621534 is a wasteful number, since it uses less digits than its factorization.

3621534 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 221 (or 198 counting only the distinct ones).

The product of its digits is 2160, while the sum is 24.

The square root of 3621534 is about 1903.0328425963. The cubic root of 3621534 is about 153.5668663612.

Adding to 3621534 its reverse (4351263), we get a palindrome (7972797).

The spelling of 3621534 in words is "three million, six hundred twenty-one thousand, five hundred thirty-four".