129691676 has 24 divisors (see below), whose sum is σ = 233135280. Its totient is φ = 63104000.

The previous prime is 129691669. The next prime is 129691721. The reversal of 129691676 is 676196921.

It is a self number, because there is not a number n which added to its sum of digits gives 129691676.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 21116 + ... + 26556.

It is an arithmetic number, because the mean of its divisors is an integer number (9713970).

Almost surely, 2^129691676 is an apocalyptic number.

It is an amenable number.

129691676 is a deficient number, since it is larger than the sum of its proper divisors (103443604).

129691676 is a wasteful number, since it uses less digits than its factorization.

129691676 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5605 (or 5603 counting only the distinct ones).

The product of its digits is 244944, while the sum is 47.

The square root of 129691676 is about 11388.2253226743. The cubic root of 129691676 is about 506.1788959529.

The spelling of 129691676 in words is "one hundred twenty-nine million, six hundred ninety-one thousand, six hundred seventy-six".