329199681 has 16 divisors (see below), whose sum is σ = 463371840. Its totient is φ = 207313920.

The previous prime is 329199671. The next prime is 329199683. The reversal of 329199681 is 186991923.

It is not a de Polignac number, because 329199681 - 2⁶ = 329199617 is a prime.

It is a super-2 number, since 2×329199681² = 216744859941003522, which contains 22 as substring.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 329199681.

It is not an unprimeable number, because it can be changed into a prime (329199683) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11941 + ... + 28301.

It is an arithmetic number, because the mean of its divisors is an integer number (28960740).

Almost surely, 2^329199681 is an apocalyptic number.

It is an amenable number.

329199681 is a deficient number, since it is larger than the sum of its proper divisors (134172159).

329199681 is a wasteful number, since it uses less digits than its factorization.

329199681 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16736.

The product of its digits is 209952, while the sum is 48.

The square root of 329199681 is about 18143.8606972166. The cubic root of 329199681 is about 690.4832300768.

The spelling of 329199681 in words is "three hundred twenty-nine million, one hundred ninety-nine thousand, six hundred eighty-one".