3528685 has 4 divisors (see below), whose sum is σ = 4234428. Its totient is φ = 2822944.

The previous prime is 3528659. The next prime is 3528743. The reversal of 3528685 is 5868253.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 5868253 = 43 ⋅136471.

It can be written as a sum of positive squares in 2 ways, for example, as 2316484 + 1212201 = 1522^2 + 1101^2 .

It is a cyclic number.

It is not a de Polignac number, because 3528685 - 2¹¹ = 3526637 is a prime.

It is a Duffinian 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, 352864 + ... + 352873.

It is an arithmetic number, because the mean of its divisors is an integer number (1058607).

Almost surely, 2^3528685 is an apocalyptic number.

It is an amenable number.

3528685 is a deficient number, since it is larger than the sum of its proper divisors (705743).

3528685 is an equidigital number, since it uses as much as digits as its factorization.

3528685 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 705742.

The product of its digits is 57600, while the sum is 37.

The square root of 3528685 is about 1878.4794382692. The cubic root of 3528685 is about 152.2431041695.

The spelling of 3528685 in words is "three million, five hundred twenty-eight thousand, six hundred eighty-five".