3631656 has 32 divisors (see below), whose sum is σ = 10376640. Its totient is φ = 1037568.

The previous prime is 3631637. The next prime is 3631703. The reversal of 3631656 is 6561363.

3631656 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 7 ways as a sum of consecutive naturals, for example, 10641 + ... + 10976.

It is an arithmetic number, because the mean of its divisors is an integer number (324270).

Almost surely, 2^3631656 is an apocalyptic number.

It is an amenable number.

3631656 is an abundant number, since it is smaller than the sum of its proper divisors (6744984).

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

3631656 is a wasteful number, since it uses less digits than its factorization.

3631656 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21633 (or 21629 counting only the distinct ones).

The product of its digits is 9720, while the sum is 30.

The square root of 3631656 is about 1905.6904260661. The cubic root of 3631656 is about 153.7098037560.

The spelling of 3631656 in words is "three million, six hundred thirty-one thousand, six hundred fifty-six".