6820345 has 8 divisors (see below), whose sum is σ = 9353664. Its totient is φ = 4676784.

The previous prime is 6820339. The next prime is 6820367. The reversal of 6820345 is 5430286.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 6820345 - 2¹¹ = 6818297 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 97399 + ... + 97468.

It is an arithmetic number, because the mean of its divisors is an integer number (1169208).

Almost surely, 2^6820345 is an apocalyptic number.

It is an amenable number.

6820345 is a deficient number, since it is larger than the sum of its proper divisors (2533319).

6820345 is a wasteful number, since it uses less digits than its factorization.

6820345 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 194879.

The product of its (nonzero) digits is 5760, while the sum is 28.

The square root of 6820345 is about 2611.5790242687. The cubic root of 6820345 is about 189.6424021819.

The spelling of 6820345 in words is "six million, eight hundred twenty thousand, three hundred forty-five".