3531624 has 16 divisors (see below), whose sum is σ = 8829120. Its totient is φ = 1177200.

The previous prime is 3531623. The next prime is 3531659. The reversal of 3531624 is 4261353.

It is a happy number.

It is a hoax number, since the sum of its digits (24) coincides with the sum of the digits of its distinct prime factors.

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: 147151 = 3531624 / (3 + 5 + 3 + 1 + 6 + 2 + 4).

It is an Ulam number.

It is a junction number, because it is equal to n+sod(n) for n = 3531594 and 3531603.

It is not an unprimeable number, because it can be changed into a prime (3531623) 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, 73552 + ... + 73599.

It is an arithmetic number, because the mean of its divisors is an integer number (551820).

Almost surely, 2^3531624 is an apocalyptic number.

It is an amenable number.

3531624 is an abundant number, since it is smaller than the sum of its proper divisors (5297496).

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

3531624 is a wasteful number, since it uses less digits than its factorization.

3531624 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 147160 (or 147156 counting only the distinct ones).

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

The square root of 3531624 is about 1879.2615571016. The cubic root of 3531624 is about 152.2853596006.

Adding to 3531624 its reverse (4261353), we get a palindrome (7792977).

The spelling of 3531624 in words is "three million, five hundred thirty-one thousand, six hundred twenty-four".