3685447 has 4 divisors (see below), whose sum is σ = 3902256. Its totient is φ = 3468640.

The previous prime is 3685441. The next prime is 3685453. The reversal of 3685447 is 7445863.

3685447 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 7445863 = 179 ⋅41597.

It is an interprime number because it is at equal distance from previous prime (3685441) and next prime (3685453).

It is a cyclic number.

It is not a de Polignac number, because 3685447 - 2¹⁵ = 3652679 is a prime.

It is a d-powerful number, because it can be written as 3⁷ + 6⁸ + 8⁵ + 5⁹ + 4⁵ + 4⁷ + 7³ .

It is a Duffinian number.

3685447 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3685441) by changing a digit.

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, 108379 + ... + 108412.

It is an arithmetic number, because the mean of its divisors is an integer number (975564).

Almost surely, 2^3685447 is an apocalyptic number.

3685447 is a deficient number, since it is larger than the sum of its proper divisors (216809).

3685447 is a wasteful number, since it uses less digits than its factorization.

3685447 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 216808.

The product of its digits is 80640, while the sum is 37.

The square root of 3685447 is about 1919.7518068750. The cubic root of 3685447 is about 154.4649885930.

The spelling of 3685447 in words is "three million, six hundred eighty-five thousand, four hundred forty-seven".