3621556 has 12 divisors (see below), whose sum is σ = 6357568. Its totient is φ = 1805112.

The previous prime is 3621529. The next prime is 3621559. The reversal of 3621556 is 6551263.

3621556 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×3621556² = 26231335722272, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3621559) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 235 + ... + 2701.

Almost surely, 2^3621556 is an apocalyptic number.

It is an amenable number.

3621556 is a deficient number, since it is larger than the sum of its proper divisors (2736012).

3621556 is a wasteful number, since it uses less digits than its factorization.

3621556 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2838 (or 2836 counting only the distinct ones).

The product of its digits is 5400, while the sum is 28.

The square root of 3621556 is about 1903.0386228345. The cubic root of 3621556 is about 153.5671773219.

The spelling of 3621556 in words is "three million, six hundred twenty-one thousand, five hundred fifty-six".