329676647 has 4 divisors (see below), whose sum is σ = 329738400. Its totient is φ = 329614896.

The previous prime is 329676637. The next prime is 329676667. The reversal of 329676647 is 746676923.

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

It is a cyclic number.

It is not a de Polignac number, because 329676647 - 2⁶ = 329676583 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 329676595 and 329676604.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (329676637) 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, 22022 + ... + 33827.

It is an arithmetic number, because the mean of its divisors is an integer number (82434600).

Almost surely, 2^329676647 is an apocalyptic number.

329676647 is a deficient number, since it is larger than the sum of its proper divisors (61753).

329676647 is an equidigital number, since it uses as much as digits as its factorization.

329676647 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 61752.

The product of its digits is 2286144, while the sum is 50.

The square root of 329676647 is about 18156.9999449248. Note that the first 4 decimals coincide. The cubic root of 329676647 is about 690.8165415554.

The spelling of 329676647 in words is "three hundred twenty-nine million, six hundred seventy-six thousand, six hundred forty-seven".