3651656 has 8 divisors (see below), whose sum is σ = 6846870. Its totient is φ = 1825824.

The previous prime is 3651653. The next prime is 3651671. The reversal of 3651656 is 6561563.

3651656 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 3118756 + 532900 = 1766^2 + 730^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is not an unprimeable number, because it can be changed into a prime (3651653) 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 as a sum of consecutive naturals, namely, 228221 + ... + 228236.

Almost surely, 2^3651656 is an apocalyptic number.

It is an amenable number.

3651656 is a deficient number, since it is larger than the sum of its proper divisors (3195214).

3651656 is a wasteful number, since it uses less digits than its factorization.

3651656 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 456463 (or 456459 counting only the distinct ones).

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

The square root of 3651656 is about 1910.9306633157. The cubic root of 3651656 is about 153.9914539588.

The spelling of 3651656 in words is "three million, six hundred fifty-one thousand, six hundred fifty-six".