3521768 has 8 divisors (see below), whose sum is σ = 6603330. Its totient is φ = 1760880.

The previous prime is 3521767. The next prime is 3521803. The reversal of 3521768 is 8671253.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 3034564 + 487204 = 1742^2 + 698^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is not an unprimeable number, because it can be changed into a prime (3521767) 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 as a sum of consecutive naturals, namely, 220103 + ... + 220118.

Almost surely, 2^3521768 is an apocalyptic number.

It is an amenable number.

3521768 is a deficient number, since it is larger than the sum of its proper divisors (3081562).

3521768 is a wasteful number, since it uses less digits than its factorization.

3521768 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 440227 (or 440223 counting only the distinct ones).

The product of its digits is 10080, while the sum is 32.

The square root of 3521768 is about 1876.6374183630. The cubic root of 3521768 is about 152.1435624250.

The spelling of 3521768 in words is "three million, five hundred twenty-one thousand, seven hundred sixty-eight".