3521206 has 8 divisors (see below), whose sum is σ = 5688144. Its totient is φ = 1625160.

The previous prime is 3521201. The next prime is 3521237. The reversal of 3521206 is 6021253.

It is a happy number.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3521201) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 67690 + ... + 67741.

It is an arithmetic number, because the mean of its divisors is an integer number (711018).

Almost surely, 2^3521206 is an apocalyptic number.

3521206 is a deficient number, since it is larger than the sum of its proper divisors (2166938).

3521206 is a wasteful number, since it uses less digits than its factorization.

3521206 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 135446.

The product of its (nonzero) digits is 360, while the sum is 19.

The square root of 3521206 is about 1876.4876764850. The cubic root of 3521206 is about 152.1354690251.

Adding to 3521206 its reverse (6021253), we get a palindrome (9542459).

The spelling of 3521206 in words is "three million, five hundred twenty-one thousand, two hundred six".