3521306 has 8 divisors (see below), whose sum is σ = 5329044. Its totient is φ = 1744960.

The previous prime is 3521303. The next prime is 3521341. The reversal of 3521306 is 6031253.

It can be written as a sum of positive squares in 2 ways, for example, as 2920681 + 600625 = 1709^2 + 775^2 .

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

It is not an unprimeable number, because it can be changed into a prime (3521303) 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, 7565 + ... + 8016.

Almost surely, 2^3521306 is an apocalyptic number.

3521306 is a deficient number, since it is larger than the sum of its proper divisors (1807738).

3521306 is a wasteful number, since it uses less digits than its factorization.

3521306 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15696.

The product of its (nonzero) digits is 540, while the sum is 20.

The square root of 3521306 is about 1876.5143218212. The cubic root of 3521306 is about 152.1369091948.

Adding to 3521306 its reverse (6031253), we get a palindrome (9552559).

The spelling of 3521306 in words is "three million, five hundred twenty-one thousand, three hundred six".