3561656 has 16 divisors (see below), whose sum is σ = 7632240. Its totient is φ = 1526400.

The previous prime is 3561643. The next prime is 3561659. The reversal of 3561656 is 6561653.

3561656 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3561659) 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, 31745 + ... + 31856.

It is an arithmetic number, because the mean of its divisors is an integer number (477015).

Almost surely, 2^3561656 is an apocalyptic number.

It is an amenable number.

3561656 is an abundant number, since it is smaller than the sum of its proper divisors (4070584).

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

3561656 is a wasteful number, since it uses less digits than its factorization.

3561656 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 63614 (or 63610 counting only the distinct ones).

The product of its digits is 16200, while the sum is 32.

The square root of 3561656 is about 1887.2350145120. The cubic root of 3561656 is about 152.7158066188.

The spelling of 3561656 in words is "three million, five hundred sixty-one thousand, six hundred fifty-six".