56663 has 2 divisors, whose sum is σ = 56664. Its totient is φ = 56662.

The previous prime is 56659. The next prime is 56671. The reversal of 56663 is 36665.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 56663 - 2² = 56659 is a prime.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (56633) 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, 28331 + 28332.

It is an arithmetic number, because the mean of its divisors is an integer number (28332).

2⁵⁶⁶⁶³ is an apocalyptic number.

56663 is a deficient number, since it is larger than the sum of its proper divisors (1).

56663 is an equidigital number, since it uses as much as digits as its factorization.

56663 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3240, while the sum is 26.

The square root of 56663 is about 238.0399126197. The cubic root of 56663 is about 38.4090166182.

It can be divided in two parts, 56 and 663, that multiplied together give a triangular number (37128 = T₂₇₂).

The spelling of 56663 in words is "fifty-six thousand, six hundred sixty-three".