3645606 has 32 divisors (see below), whose sum is σ = 7770240. Its totient is φ = 1137024.

The previous prime is 3645589. The next prime is 3645611. The reversal of 3645606 is 6065463.

3645606 = 429² + 430² + ... + 447².

3645606 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12741 + ... + 13023.

It is an arithmetic number, because the mean of its divisors is an integer number (242820).

Almost surely, 2^3645606 is an apocalyptic number.

3645606 is an abundant number, since it is smaller than the sum of its proper divisors (4124634).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

3645606 is a wasteful number, since it uses less digits than its factorization.

3645606 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 420.

The product of its (nonzero) digits is 12960, while the sum is 30.

The square root of 3645606 is about 1909.3470087965. The cubic root of 3645606 is about 153.9063634972.

The spelling of 3645606 in words is "three million, six hundred forty-five thousand, six hundred six".