12635983 has 4 divisors (see below), whose sum is σ = 12643128. Its totient is φ = 12628840.

The previous prime is 12635977. The next prime is 12635989. The reversal of 12635983 is 38953621.

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 an interprime number because it is at equal distance from previous prime (12635977) and next prime (12635989).

It is a cyclic number.

It is not a de Polignac number, because 12635983 - 2²¹ = 10538831 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 (12635989) 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, 1260 + ... + 5182.

It is an arithmetic number, because the mean of its divisors is an integer number (3160782).

Almost surely, 2^12635983 is an apocalyptic number.

12635983 is a deficient number, since it is larger than the sum of its proper divisors (7145).

12635983 is an equidigital number, since it uses as much as digits as its factorization.

12635983 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7144.

The product of its digits is 38880, while the sum is 37.

The square root of 12635983 is about 3554.7127872727. The cubic root of 12635983 is about 232.9179778466.

The spelling of 12635983 in words is "twelve million, six hundred thirty-five thousand, nine hundred eighty-three".