6840329 has 4 divisors (see below), whose sum is σ = 6889680. Its totient is φ = 6790980.

The previous prime is 6840313. The next prime is 6840331. The reversal of 6840329 is 9230486.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 6840329 - 2⁴ = 6840313 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 6840295 and 6840304.

It is not an unprimeable number, because it can be changed into a prime (6840349) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 24467 + ... + 24744.

It is an arithmetic number, because the mean of its divisors is an integer number (1722420).

Almost surely, 2^6840329 is an apocalyptic number.

It is an amenable number.

6840329 is a deficient number, since it is larger than the sum of its proper divisors (49351).

6840329 is a wasteful number, since it uses less digits than its factorization.

6840329 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49350.

The product of its (nonzero) digits is 10368, while the sum is 32.

The square root of 6840329 is about 2615.4022635151. The cubic root of 6840329 is about 189.8274425927.

The spelling of 6840329 in words is "six million, eight hundred forty thousand, three hundred twenty-nine".