3531685 has 4 divisors (see below), whose sum is σ = 4238028. Its totient is φ = 2825344.

The previous prime is 3531683. The next prime is 3531691. The reversal of 3531685 is 5861353.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 5861353 = 107 ⋅54779.

It can be written as a sum of positive squares in 2 ways, for example, as 1684804 + 1846881 = 1298^2 + 1359^2 .

It is a cyclic number.

It is not a de Polignac number, because 3531685 - 2¹ = 3531683 is a prime.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3531683) 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, 353164 + ... + 353173.

It is an arithmetic number, because the mean of its divisors is an integer number (1059507).

Almost surely, 2^3531685 is an apocalyptic number.

It is an amenable number.

3531685 is a deficient number, since it is larger than the sum of its proper divisors (706343).

3531685 is an equidigital number, since it uses as much as digits as its factorization.

3531685 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 706342.

The product of its digits is 10800, while the sum is 31.

The square root of 3531685 is about 1879.2777868107. The cubic root of 3531685 is about 152.2862363789.

The spelling of 3531685 in words is "three million, five hundred thirty-one thousand, six hundred eighty-five".