3621566 has 8 divisors (see below), whose sum is σ = 5850264. Its totient is φ = 1671480.

The previous prime is 3621559. The next prime is 3621577. The reversal of 3621566 is 6651263.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is an unprimeable number.

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 in 3 ways as a sum of consecutive naturals, for example, 69620 + ... + 69671.

It is an arithmetic number, because the mean of its divisors is an integer number (731283).

Almost surely, 2^3621566 is an apocalyptic number.

3621566 is a deficient number, since it is larger than the sum of its proper divisors (2228698).

3621566 is a wasteful number, since it uses less digits than its factorization.

3621566 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 139306.

The product of its digits is 6480, while the sum is 29.

The square root of 3621566 is about 1903.0412502098. The cubic root of 3621566 is about 153.5673186672.

The spelling of 3621566 in words is "three million, six hundred twenty-one thousand, five hundred sixty-six".