3521626 has 4 divisors (see below), whose sum is σ = 5282442. Its totient is φ = 1760812.

The previous prime is 3521561. The next prime is 3521627. The reversal of 3521626 is 6261253.

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., 3066001 + 455625 = 1751^2 + 675^2 .

It is an Ulam number.

It is a self number, because there is not a number n which added to its sum of digits gives 3521626.

It is not an unprimeable number, because it can be changed into a prime (3521627) 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, 880405 + ... + 880408.

Almost surely, 2^3521626 is an apocalyptic number.

3521626 is a deficient number, since it is larger than the sum of its proper divisors (1760816).

3521626 is a wasteful number, since it uses less digits than its factorization.

3521626 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1760815.

The product of its digits is 2160, while the sum is 25.

The square root of 3521626 is about 1876.5995843546. The cubic root of 3521626 is about 152.1415175547.

Adding to 3521626 its reverse (6261253), we get a palindrome (9782879).

The spelling of 3521626 in words is "three million, five hundred twenty-one thousand, six hundred twenty-six".