3645545 has 8 divisors (see below), whose sum is σ = 4393224. Its totient is φ = 2904064.

The previous prime is 3645539. The next prime is 3645557. The reversal of 3645545 is 5455463.

3645545 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 434281 + 3211264 = 659^2 + 1792^2 .

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 3645545 - 2⁸ = 3645289 is a prime.

It is a Duffinian number.

It is a Curzon 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 7 ways as a sum of consecutive naturals, for example, 134 + ... + 2703.

It is an arithmetic number, because the mean of its divisors is an integer number (549153).

Almost surely, 2^3645545 is an apocalyptic number.

It is an amenable number.

3645545 is a deficient number, since it is larger than the sum of its proper divisors (747679).

3645545 is a wasteful number, since it uses less digits than its factorization.

3645545 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3099.

The product of its digits is 36000, while the sum is 32.

The square root of 3645545 is about 1909.3310346820. The cubic root of 3645545 is about 153.9055050811.

The spelling of 3645545 in words is "three million, six hundred forty-five thousand, five hundred forty-five".