3635573 has 4 divisors (see below), whose sum is σ = 3639468. Its totient is φ = 3631680.

The previous prime is 3635563. The next prime is 3635579. The reversal of 3635573 is 3755363.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 3755363 = 139 ⋅27017.

It can be written as a sum of positive squares in 2 ways, for example, as 1270129 + 2365444 = 1127^2 + 1538^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3635573 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3635579) 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, 383 + ... + 2723.

It is an arithmetic number, because the mean of its divisors is an integer number (909867).

Almost surely, 2^3635573 is an apocalyptic number.

It is an amenable number.

3635573 is a deficient number, since it is larger than the sum of its proper divisors (3895).

3635573 is a wasteful number, since it uses less digits than its factorization.

3635573 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3894.

The product of its digits is 28350, while the sum is 32.

The square root of 3635573 is about 1906.7178606181. The cubic root of 3635573 is about 153.7650462284.

The spelling of 3635573 in words is "three million, six hundred thirty-five thousand, five hundred seventy-three".