6819345 has 24 divisors (see below), whose sum is σ = 12730536. Its totient is φ = 3356928.

The previous prime is 6819343. The next prime is 6819353. The reversal of 6819345 is 5439186.

It can be written as a sum of positive squares in 4 ways, for example, as 408321 + 6411024 = 639^2 + 2532^2 .

It is not a de Polignac number, because 6819345 - 2¹ = 6819343 is a prime.

It is an Ulam number.

It is not an unprimeable number, because it can be changed into a prime (6819341) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 5244 + ... + 6413.

It is an arithmetic number, because the mean of its divisors is an integer number (530439).

Almost surely, 2^6819345 is an apocalyptic number.

6819345 is a gapful number since it is divisible by the number (65) formed by its first and last digit.

It is an amenable number.

6819345 is a deficient number, since it is larger than the sum of its proper divisors (5911191).

6819345 is a wasteful number, since it uses less digits than its factorization.

6819345 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11681 (or 11678 counting only the distinct ones).

The product of its digits is 25920, while the sum is 36.

The square root of 6819345 is about 2611.3875621975. The cubic root of 6819345 is about 189.6331332631.

The spelling of 6819345 in words is "six million, eight hundred nineteen thousand, three hundred forty-five".