3640804 has 6 divisors (see below), whose sum is σ = 6371414. Its totient is φ = 1820400.

The previous prime is 3640801. The next prime is 3640807. The reversal of 3640804 is 4080463.

It is an interprime number because it is at equal distance from previous prime (3640801) and next prime (3640807).

It can be written as a sum of positive squares in only one way, i.e., 2408704 + 1232100 = 1552^2 + 1110^2 .

It is not an unprimeable number, because it can be changed into a prime (3640801) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 455097 + ... + 455104.

Almost surely, 2^3640804 is an apocalyptic number.

It is an amenable number.

3640804 is a deficient number, since it is larger than the sum of its proper divisors (2730610).

3640804 is a wasteful number, since it uses less digits than its factorization.

3640804 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 910205 (or 910203 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 25.

The square root of 3640804 is about 1908.0890964523. The cubic root of 3640804 is about 153.8387585420.

It can be divided in two parts, 3640 and 804, that added together give a palindrome (4444).

The spelling of 3640804 in words is "three million, six hundred forty thousand, eight hundred four".