3527621 has 2 divisors, whose sum is σ = 3527622. Its totient is φ = 3527620.

The previous prime is 3527611. The next prime is 3527639. The reversal of 3527621 is 1267253.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 3150625 + 376996 = 1775^2 + 614^2 .

It is a cyclic number.

It is not a de Polignac number, because 3527621 - 2¹⁴ = 3511237 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3527611) 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, 1763810 + 1763811.

It is an arithmetic number, because the mean of its divisors is an integer number (1763811).

Almost surely, 2^3527621 is an apocalyptic number.

It is an amenable number.

3527621 is a deficient number, since it is larger than the sum of its proper divisors (1).

3527621 is an equidigital number, since it uses as much as digits as its factorization.

3527621 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2520, while the sum is 26.

The square root of 3527621 is about 1878.1962091326. The cubic root of 3527621 is about 152.2278007400.

The spelling of 3527621 in words is "three million, five hundred twenty-seven thousand, six hundred twenty-one".