3603643 has 4 divisors (see below), whose sum is σ = 3815640. Its totient is φ = 3391648.

The previous prime is 3603623. The next prime is 3603659. The reversal of 3603643 is 3463063.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3463063 = 197 ⋅17579.

It is a cyclic number.

It is not a de Polignac number, because 3603643 - 2¹³ = 3595451 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3603623) 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, 105973 + ... + 106006.

It is an arithmetic number, because the mean of its divisors is an integer number (953910).

Almost surely, 2^3603643 is an apocalyptic number.

3603643 is a deficient number, since it is larger than the sum of its proper divisors (211997).

3603643 is a wasteful number, since it uses less digits than its factorization.

3603643 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 211996.

The product of its (nonzero) digits is 3888, while the sum is 25.

The square root of 3603643 is about 1898.3263681464. The cubic root of 3603643 is about 153.3135665550.

The spelling of 3603643 in words is "three million, six hundred three thousand, six hundred forty-three".