63556 has 6 divisors (see below), whose sum is σ = 111230. Its totient is φ = 31776.

The previous prime is 63541. The next prime is 63559. The reversal of 63556 is 65536.

It can be written as a sum of positive squares in only one way, i.e., 46656 + 16900 = 216^2 + 130^2 .

It is a nialpdrome in base 16.

It is a self number, because there is not a number n which added to its sum of digits gives 63556.

It is not an unprimeable number, because it can be changed into a prime (63559) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7941 + ... + 7948.

2⁶³⁵⁵⁶ is an apocalyptic number.

It is an amenable number.

63556 is a deficient number, since it is larger than the sum of its proper divisors (47674).

63556 is a wasteful number, since it uses less digits than its factorization.

63556 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15893 (or 15891 counting only the distinct ones).

The product of its digits is 2700, while the sum is 25.

The square root of 63556 is about 252.1031534908. The cubic root of 63556 is about 39.9072852655.

The spelling of 63556 in words is "sixty-three thousand, five hundred fifty-six".