3645633 has 8 divisors (see below), whose sum is σ = 5146848. Its totient is φ = 2287424.

The previous prime is 3645623. The next prime is 3645643. The reversal of 3645633 is 3365463.

It is an interprime number because it is at equal distance from previous prime (3645623) and next prime (3645643).

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 3645633 - 2⁸ = 3645377 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 3645633.

It is not an unprimeable number, because it can be changed into a prime (3645623) 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, 35691 + ... + 35792.

It is an arithmetic number, because the mean of its divisors is an integer number (643356).

Almost surely, 2^3645633 is an apocalyptic number.

It is an amenable number.

3645633 is a deficient number, since it is larger than the sum of its proper divisors (1501215).

3645633 is a wasteful number, since it uses less digits than its factorization.

3645633 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 71503.

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

The square root of 3645633 is about 1909.3540792635. The cubic root of 3645633 is about 153.9067434488.

It can be divided in two parts, 3645 and 633, that added together give a triangular number (4278 = T₉₂).

The spelling of 3645633 in words is "three million, six hundred forty-five thousand, six hundred thirty-three".