12729663 has 32 divisors (see below), whose sum is σ = 19641600. Its totient is φ = 8143200.

The previous prime is 12729653. The next prime is 12729671. The reversal of 12729663 is 36692721.

It is not a de Polignac number, because 12729663 - 2¹⁴ = 12713279 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12729643) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 97108 + ... + 97238.

It is an arithmetic number, because the mean of its divisors is an integer number (613800).

Almost surely, 2^12729663 is an apocalyptic number.

12729663 is a deficient number, since it is larger than the sum of its proper divisors (6911937).

12729663 is a wasteful number, since it uses less digits than its factorization.

12729663 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 260 (or 254 counting only the distinct ones).

The product of its digits is 27216, while the sum is 36.

The square root of 12729663 is about 3567.8653281759. The cubic root of 12729663 is about 233.4921596653.

The spelling of 12729663 in words is "twelve million, seven hundred twenty-nine thousand, six hundred sixty-three".