3645504 has 42 divisors (see below), whose sum is σ = 10450830. Its totient is φ = 1214976.

The previous prime is 3645469. The next prime is 3645527. The reversal of 3645504 is 4055463.

It can be written as a sum of positive squares in only one way, i.e., 3415104 + 230400 = 1848^2 + 480^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2589 + ... + 3740.

Almost surely, 2^3645504 is an apocalyptic number.

It is an amenable number.

3645504 is an abundant number, since it is smaller than the sum of its proper divisors (6805326).

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

3645504 is a wasteful number, since it uses less digits than its factorization.

3645504 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6347 (or 6334 counting only the distinct ones).

The product of its (nonzero) digits is 7200, while the sum is 27.

The square root of 3645504 is about 1909.3202979071. The cubic root of 3645504 is about 153.9049281076.

The spelling of 3645504 in words is "three million, six hundred forty-five thousand, five hundred four".