3633645 has 8 divisors (see below), whose sum is σ = 5813856. Its totient is φ = 1937936.

The previous prime is 3633583. The next prime is 3633647. The reversal of 3633645 is 5463363.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 3633645 - 2¹⁰ = 3632621 is a prime.

It is a super-3 number, since 3×3633645³ (a number of 21 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3633647) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 121107 + ... + 121136.

It is an arithmetic number, because the mean of its divisors is an integer number (726732).

Almost surely, 2^3633645 is an apocalyptic number.

It is an amenable number.

3633645 is a deficient number, since it is larger than the sum of its proper divisors (2180211).

3633645 is a wasteful number, since it uses less digits than its factorization.

3633645 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 242251.

The product of its digits is 19440, while the sum is 30.

The square root of 3633645 is about 1906.2122127402. The cubic root of 3633645 is about 153.7378601030.

It can be divided in two parts, 3633 and 645, that added together give a triangular number (4278 = T₉₂).

The spelling of 3633645 in words is "three million, six hundred thirty-three thousand, six hundred forty-five".