329676649 has 9 divisors (see below), whose sum is σ = 335910141. Its totient is φ = 323557740.

The previous prime is 329676637. The next prime is 329676667. The reversal of 329676649 is 946676923.

The square root of 329676649 is 18157.

It is a perfect power (a square), and thus also a powerful number.

It is not a de Polignac number, because 329676649 - 2¹³ = 329668457 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 329676596 and 329676605.

It is not an unprimeable number, because it can be changed into a prime (329676679) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 1216384 + ... + 1216654.

It is an arithmetic number, because the mean of its divisors is an integer number (37323349).

Almost surely, 2^329676649 is an apocalyptic number.

329676649 is the 18157-th square number.

329676649 is the 9079-th centered octagonal number.

It is an amenable number.

329676649 is a deficient number, since it is larger than the sum of its proper divisors (6233492).

329676649 is an frugal number, since it uses more digits than its factorization.

329676649 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 676 (or 338 counting only the distinct ones).

The product of its digits is 2939328, while the sum is 52.

The cubic root of 329676649 is about 690.8165429523.

The spelling of 329676649 in words is "three hundred twenty-nine million, six hundred seventy-six thousand, six hundred forty-nine".