3655856 has 20 divisors (see below), whose sum is σ = 7328400. Its totient is φ = 1764672.

The previous prime is 3655849. The next prime is 3655877. The reversal of 3655856 is 6585563.

3655856 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an Ulam number.

It is an unprimeable number.

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, 3476 + ... + 4403.

It is an arithmetic number, because the mean of its divisors is an integer number (366420).

Almost surely, 2^3655856 is an apocalyptic number.

It is an amenable number.

3655856 is an abundant number, since it is smaller than the sum of its proper divisors (3672544).

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

3655856 is a wasteful number, since it uses less digits than its factorization.

3655856 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7916 (or 7910 counting only the distinct ones).

The product of its digits is 108000, while the sum is 38.

The square root of 3655856 is about 1912.0292884786. The cubic root of 3655856 is about 154.0504697682.

The spelling of 3655856 in words is "three million, six hundred fifty-five thousand, eight hundred fifty-six".