4131685 has 8 divisors (see below), whose sum is σ = 4969080. Its totient is φ = 3297984.

The previous prime is 4131667. The next prime is 4131707. The reversal of 4131685 is 5861314.

It can be written as a sum of positive squares in 4 ways, for example, as 6724 + 4124961 = 82^2 + 2031^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 4131685 - 2⁵ = 4131653 is a prime.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 3331 + ... + 4399.

It is an arithmetic number, because the mean of its divisors is an integer number (621135).

Almost surely, 2^4131685 is an apocalyptic number.

It is an amenable number.

4131685 is a deficient number, since it is larger than the sum of its proper divisors (837395).

4131685 is a wasteful number, since it uses less digits than its factorization.

4131685 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1847.

The product of its digits is 2880, while the sum is 28.

The square root of 4131685 is about 2032.6546681618. The cubic root of 4131685 is about 160.4633055673.

Adding to 4131685 its reverse (5861314), we get a palindrome (9992999).

The spelling of 4131685 in words is "four million, one hundred thirty-one thousand, six hundred eighty-five".