63659983 has 4 divisors (see below), whose sum is σ = 64610200. Its totient is φ = 62709768.

The previous prime is 63659977. The next prime is 63659989. The reversal of 63659983 is 38995636.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (63659977) and next prime (63659989).

It is a cyclic number.

It is not a de Polignac number, because 63659983 - 2⁹ = 63659471 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 (63659989) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 475008 + ... + 475141.

It is an arithmetic number, because the mean of its divisors is an integer number (16152550).

Almost surely, 2^63659983 is an apocalyptic number.

63659983 is a deficient number, since it is larger than the sum of its proper divisors (950217).

63659983 is an equidigital number, since it uses as much as digits as its factorization.

63659983 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 950216.

The product of its digits is 1049760, while the sum is 49.

The square root of 63659983 is about 7978.7206367938. The cubic root of 63659983 is about 399.2903730685.

The spelling of 63659983 in words is "sixty-three million, six hundred fifty-nine thousand, nine hundred eighty-three".