129663 has 6 divisors (see below), whose sum is σ = 187304. Its totient is φ = 86436.

The previous prime is 129643. The next prime is 129671. The reversal of 129663 is 366921.

It is a happy number.

It is not a de Polignac number, because 129663 - 2⁵ = 129631 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 129663.

It is not an unprimeable number, because it can be changed into a prime (129643) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 7195 + ... + 7212.

2¹²⁹⁶⁶³ is an apocalyptic number.

129663 is a deficient number, since it is larger than the sum of its proper divisors (57641).

129663 is a wasteful number, since it uses less digits than its factorization.

129663 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14413 (or 14410 counting only the distinct ones).

The product of its digits is 1944, while the sum is 27.

The square root of 129663 is about 360.0874893689. The cubic root of 129663 is about 50.6141586296.

The spelling of 129663 in words is "one hundred twenty-nine thousand, six hundred sixty-three".