3521624 has 8 divisors (see below), whose sum is σ = 6603060. Its totient is φ = 1760808.

The previous prime is 3521561. The next prime is 3521627. The reversal of 3521624 is 4261253.

It is a tau number, because it is divible by the number of its divisors (8).

It is a self number, because there is not a number n which added to its sum of digits gives 3521624.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3521627) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 220094 + ... + 220109.

Almost surely, 2^3521624 is an apocalyptic number.

It is an amenable number.

3521624 is a deficient number, since it is larger than the sum of its proper divisors (3081436).

3521624 is a wasteful number, since it uses less digits than its factorization.

3521624 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 440209 (or 440205 counting only the distinct ones).

The product of its digits is 1440, while the sum is 23.

The square root of 3521624 is about 1876.5990514758. The cubic root of 3521624 is about 152.1414887534.

Adding to 3521624 its reverse (4261253), we get a palindrome (7782877).

The spelling of 3521624 in words is "three million, five hundred twenty-one thousand, six hundred twenty-four".