3685646 has 8 divisors (see below), whose sum is σ = 5646240. Its totient is φ = 1803568.

The previous prime is 3685631. The next prime is 3685657. The reversal of 3685646 is 6465863.

3685646 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 19511 + ... + 19698.

It is an arithmetic number, because the mean of its divisors is an integer number (705780).

Almost surely, 2^3685646 is an apocalyptic number.

3685646 is a deficient number, since it is larger than the sum of its proper divisors (1960594).

3685646 is a wasteful number, since it uses less digits than its factorization.

3685646 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39258.

The product of its digits is 103680, while the sum is 38.

The square root of 3685646 is about 1919.8036357920. The cubic root of 3685646 is about 154.4677687152.

The spelling of 3685646 in words is "three million, six hundred eighty-five thousand, six hundred forty-six".