3506885 has 4 divisors (see below), whose sum is σ = 4208268. Its totient is φ = 2805504.

The previous prime is 3506873. The next prime is 3506891. The reversal of 3506885 is 5886053.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 5886053 = 79 ⋅74507.

It can be written as a sum of positive squares in 2 ways, for example, as 2427364 + 1079521 = 1558^2 + 1039^2 .

It is a cyclic number.

It is not a de Polignac number, because 3506885 - 2⁴ = 3506869 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 350684 + ... + 350693.

It is an arithmetic number, because the mean of its divisors is an integer number (1052067).

Almost surely, 2^3506885 is an apocalyptic number.

It is an amenable number.

3506885 is a deficient number, since it is larger than the sum of its proper divisors (701383).

3506885 is an equidigital number, since it uses as much as digits as its factorization.

3506885 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 701382.

The product of its (nonzero) digits is 28800, while the sum is 35.

The square root of 3506885 is about 1872.6678829947. The cubic root of 3506885 is about 151.9289401227.

It can be divided in two parts, 35068 and 85, that added together give a palindrome (35153).

The spelling of 3506885 in words is "three million, five hundred six thousand, eight hundred eighty-five".