329641 has 4 divisors (see below), whose sum is σ = 355012. Its totient is φ = 304272.

The previous prime is 329639. The next prime is 329657. The reversal of 329641 is 146923.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 75625 + 254016 = 275^2 + 504^2 .

It is a cyclic number.

It is not a de Polignac number, because 329641 - 2¹ = 329639 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (329671) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12666 + ... + 12691.

It is an arithmetic number, because the mean of its divisors is an integer number (88753).

2³²⁹⁶⁴¹ is an apocalyptic number.

It is an amenable number.

329641 is a deficient number, since it is larger than the sum of its proper divisors (25371).

329641 is a wasteful number, since it uses less digits than its factorization.

329641 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25370.

The product of its digits is 1296, while the sum is 25.

The square root of 329641 is about 574.1437102329. The cubic root of 329641 is about 69.0791641981.

The spelling of 329641 in words is "three hundred twenty-nine thousand, six hundred forty-one".