5631656 has 8 divisors (see below), whose sum is σ = 10559370. Its totient is φ = 2815824.

The previous prime is 5631629. The next prime is 5631671. The reversal of 5631656 is 6561365.

It can be written as a sum of positive squares in only one way, i.e., 2856100 + 2775556 = 1690^2 + 1666^2 .

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

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 351971 + ... + 351986.

Almost surely, 2^5631656 is an apocalyptic number.

It is an amenable number.

5631656 is a deficient number, since it is larger than the sum of its proper divisors (4927714).

5631656 is a wasteful number, since it uses less digits than its factorization.

5631656 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 703963 (or 703959 counting only the distinct ones).

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

The square root of 5631656 is about 2373.1110382787. Note that the first 3 decimals coincide. The cubic root of 5631656 is about 177.9147847800.

The spelling of 5631656 in words is "five million, six hundred thirty-one thousand, six hundred fifty-six".