129605066 has 8 divisors (see below), whose sum is σ = 194490720. Its totient is φ = 64774828.

The previous prime is 129605057. The next prime is 129605101. The reversal of 129605066 is 660506921.

It is a happy number.

129605066 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7406 + ... + 17721.

It is an arithmetic number, because the mean of its divisors is an integer number (24311340).

Almost surely, 2^129605066 is an apocalyptic number.

129605066 is a deficient number, since it is larger than the sum of its proper divisors (64885654).

129605066 is a wasteful number, since it uses less digits than its factorization.

129605066 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27708.

The product of its (nonzero) digits is 19440, while the sum is 35.

The square root of 129605066 is about 11384.4220758017. The cubic root of 129605066 is about 506.0661929684.

The spelling of 129605066 in words is "one hundred twenty-nine million, six hundred five thousand, sixty-six".