3645650 has 24 divisors (see below), whose sum is σ = 7181460. Its totient is φ = 1372160.

The previous prime is 3645643. The next prime is 3645659. The reversal of 3645650 is 565463.

3645650 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 6 ways, for example, as 2778889 + 866761 = 1667^2 + 931^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3645659) by changing a digit.

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 11 ways as a sum of consecutive naturals, for example, 1295 + ... + 2994.

Almost surely, 2^3645650 is an apocalyptic number.

3645650 is a deficient number, since it is larger than the sum of its proper divisors (3535810).

3645650 is a wasteful number, since it uses less digits than its factorization.

3645650 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4318 (or 4313 counting only the distinct ones).

The product of its (nonzero) digits is 10800, while the sum is 29.

The square root of 3645650 is about 1909.3585310255. The cubic root of 3645650 is about 153.9069826766.

The spelling of 3645650 in words is "three million, six hundred forty-five thousand, six hundred fifty".