3685213 has 4 divisors (see below), whose sum is σ = 4211680. Its totient is φ = 3158748.

The previous prime is 3685211. The next prime is 3685219. The reversal of 3685213 is 3125863.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 3685213 - 2¹ = 3685211 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3685211) 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 in 3 ways as a sum of consecutive naturals, for example, 263223 + ... + 263236.

It is an arithmetic number, because the mean of its divisors is an integer number (1052920).

Almost surely, 2^3685213 is an apocalyptic number.

It is an amenable number.

3685213 is a deficient number, since it is larger than the sum of its proper divisors (526467).

3685213 is an equidigital number, since it uses as much as digits as its factorization.

3685213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 526466.

The product of its digits is 4320, while the sum is 28.

The square root of 3685213 is about 1919.6908605294. The cubic root of 3685213 is about 154.4617193765.

The spelling of 3685213 in words is "three million, six hundred eighty-five thousand, two hundred thirteen".