3685855 has 16 divisors (see below), whose sum is σ = 4739904. Its totient is φ = 2741760.

The previous prime is 3685849. The next prime is 3685861. The reversal of 3685855 is 5585863.

It is an interprime number because it is at equal distance from previous prime (3685849) and next prime (3685861).

It is not a de Polignac number, because 3685855 - 2¹⁹ = 3161567 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8545 + ... + 8965.

It is an arithmetic number, because the mean of its divisors is an integer number (296244).

Almost surely, 2^3685855 is an apocalyptic number.

3685855 is a deficient number, since it is larger than the sum of its proper divisors (1054049).

3685855 is a wasteful number, since it uses less digits than its factorization.

3685855 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 546.

The product of its digits is 144000, while the sum is 40.

The square root of 3685855 is about 1919.8580676706. The cubic root of 3685855 is about 154.4706884344.

The spelling of 3685855 in words is "three million, six hundred eighty-five thousand, eight hundred fifty-five".