3645056 has 16 divisors (see below), whose sum is σ = 7261890. Its totient is φ = 1822464.

The previous prime is 3645053. The next prime is 3645071. The reversal of 3645056 is 6505463.

3645056 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 only one way, i.e., 3182656 + 462400 = 1784^2 + 680^2 .

It is a tau number, because it is divible by the number of its divisors (16).

It is an Ulam number.

It is not an unprimeable number, because it can be changed into a prime (3645053) 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 as a sum of consecutive naturals, namely, 14111 + ... + 14366.

Almost surely, 2^3645056 is an apocalyptic number.

It is an amenable number.

3645056 is a deficient number, since it is larger than the sum of its proper divisors (3616834).

3645056 is an equidigital number, since it uses as much as digits as its factorization.

3645056 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28491 (or 28479 counting only the distinct ones).

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

The square root of 3645056 is about 1909.2029750658. The cubic root of 3645056 is about 153.8986233339.

The spelling of 3645056 in words is "three million, six hundred forty-five thousand, fifty-six".