3645424 has 20 divisors (see below), whose sum is σ = 7164720. Its totient is φ = 1796480.

The previous prime is 3645419. The next prime is 3645449. The reversal of 3645424 is 4245463.

It is a super-3 number, since 3×3645424³ (a number of 21 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a d-powerful number, because it can be written as 3⁷ + 6⁸ + 4⁴ + 5⁹ + 4⁵ + 2¹³ + 4⁵ .

It is a junction number, because it is equal to n+sod(n) for n = 3645392 and 3645401.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 469 + ... + 2740.

It is an arithmetic number, because the mean of its divisors is an integer number (358236).

Almost surely, 2^3645424 is an apocalyptic number.

It is an amenable number.

3645424 is a deficient number, since it is larger than the sum of its proper divisors (3519296).

3645424 is a wasteful number, since it uses less digits than its factorization.

3645424 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3288 (or 3282 counting only the distinct ones).

The product of its digits is 11520, while the sum is 28.

The square root of 3645424 is about 1909.2993479284. The cubic root of 3645424 is about 153.9038022930.

The spelling of 3645424 in words is "three million, six hundred forty-five thousand, four hundred twenty-four".