329705642 has 16 divisors (see below), whose sum is σ = 568681152. Its totient is φ = 140434560.

The previous prime is 329705617. The next prime is 329705659. The reversal of 329705642 is 246507923.

329705642 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 329705596 and 329705605.

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, 69959 + ... + 74522.

It is an arithmetic number, because the mean of its divisors is an integer number (35542572).

Almost surely, 2^329705642 is an apocalyptic number.

329705642 is a deficient number, since it is larger than the sum of its proper divisors (238975510).

329705642 is a wasteful number, since it uses less digits than its factorization.

329705642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 144653.

The product of its (nonzero) digits is 90720, while the sum is 38.

The square root of 329705642 is about 18157.7983797596. The cubic root of 329705642 is about 690.8367933573.

The spelling of 329705642 in words is "three hundred twenty-nine million, seven hundred five thousand, six hundred forty-two".