3521746 has 4 divisors (see below), whose sum is σ = 5282622. Its totient is φ = 1760872.

The previous prime is 3521729. The next prime is 3521747. The reversal of 3521746 is 6471253.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 2975625 + 546121 = 1725^2 + 739^2 .

It is a super-3 number, since 3×3521746³ (a number of 21 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (3521747) 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, 880435 + ... + 880438.

Almost surely, 2^3521746 is an apocalyptic number.

3521746 is a deficient number, since it is larger than the sum of its proper divisors (1760876).

3521746 is a wasteful number, since it uses less digits than its factorization.

3521746 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1760875.

The product of its digits is 5040, while the sum is 28.

The square root of 3521746 is about 1876.6315568060. The cubic root of 3521746 is about 152.1432456177.

Adding to 3521746 its reverse (6471253), we get a palindrome (9992999).

The spelling of 3521746 in words is "three million, five hundred twenty-one thousand, seven hundred forty-six".