169680329 has 16 divisors (see below), whose sum is σ = 215577600. Its totient is φ = 129919680.

The previous prime is 169680307. The next prime is 169680331. The reversal of 169680329 is 923086961.

169680329 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 169680329 - 2¹² = 169676233 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 169680329.

It is not an unprimeable number, because it can be changed into a prime (169680359) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 27254 + ... + 32895.

It is an arithmetic number, because the mean of its divisors is an integer number (13473600).

Almost surely, 2^169680329 is an apocalyptic number.

It is an amenable number.

169680329 is a deficient number, since it is larger than the sum of its proper divisors (45897271).

169680329 is a wasteful number, since it uses less digits than its factorization.

169680329 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 60200.

The product of its (nonzero) digits is 139968, while the sum is 44.

The square root of 169680329 is about 13026.1402188062. The cubic root of 169680329 is about 553.6183787644.

The spelling of 169680329 in words is "one hundred sixty-nine million, six hundred eighty thousand, three hundred twenty-nine".