63983 has 4 divisors (see below), whose sum is σ = 64680. Its totient is φ = 63288.

The previous prime is 63977. The next prime is 63997. The reversal of 63983 is 38936.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 63983 - 2⁸ = 63727 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (63913) by changing a digit.

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 in 3 ways as a sum of consecutive naturals, for example, 185 + ... + 402.

It is an arithmetic number, because the mean of its divisors is an integer number (16170).

2⁶³⁹⁸³ is an apocalyptic number.

63983 is a deficient number, since it is larger than the sum of its proper divisors (697).

63983 is a wasteful number, since it uses less digits than its factorization.

63983 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 696.

The product of its digits is 3888, while the sum is 29.

The square root of 63983 is about 252.9486113818. The cubic root of 63983 is about 39.9964580197.

The spelling of 63983 in words is "sixty-three thousand, nine hundred eighty-three".