3709566 has 48 divisors (see below), whose sum is σ = 9360000. Its totient is φ = 1039824.

The previous prime is 3709561. The next prime is 3709577. The reversal of 3709566 is 6659073.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 3709566.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3709561) 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 in 23 ways as a sum of consecutive naturals, for example, 7185 + ... + 7683.

It is an arithmetic number, because the mean of its divisors is an integer number (195000).

Almost surely, 2^3709566 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 3709566, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4680000).

3709566 is an abundant number, since it is smaller than the sum of its proper divisors (5650434).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

3709566 is a wasteful number, since it uses less digits than its factorization.

3709566 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 573 (or 570 counting only the distinct ones).

The product of its (nonzero) digits is 34020, while the sum is 36.

The square root of 3709566 is about 1926.0233643443. The cubic root of 3709566 is about 154.8012158629.

The spelling of 3709566 in words is "three million, seven hundred nine thousand, five hundred sixty-six".