3665404 has 24 divisors (see below), whose sum is σ = 7151760. Its totient is φ = 1633536.

The previous prime is 3665401. The next prime is 3665407. The reversal of 3665404 is 4045663.

It is an interprime number because it is at equal distance from previous prime (3665401) and next prime (3665407).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3665401) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 127 + ... + 2710.

It is an arithmetic number, because the mean of its divisors is an integer number (297990).

Almost surely, 2^3665404 is an apocalyptic number.

3665404 is a gapful number since it is divisible by the number (34) formed by its first and last digit.

It is an amenable number.

3665404 is a deficient number, since it is larger than the sum of its proper divisors (3486356).

3665404 is a wasteful number, since it uses less digits than its factorization.

3665404 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2877 (or 2875 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 28.

The square root of 3665404 is about 1914.5244840430. The cubic root of 3665404 is about 154.1844644009.

The spelling of 3665404 in words is "three million, six hundred sixty-five thousand, four hundred four".