6909345 has 24 divisors (see below), whose sum is σ = 12206376. Its totient is φ = 3614208.

The previous prime is 6909341. The next prime is 6909347. The reversal of 6909345 is 5439096.

It can be written as a sum of positive squares in 4 ways, for example, as 314721 + 6594624 = 561^2 + 2568^2 .

It is not a de Polignac number, because 6909345 - 2² = 6909341 is a prime.

It is not an unprimeable number, because it can be changed into a prime (6909341) 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, 937 + ... + 3833.

It is an arithmetic number, because the mean of its divisors is an integer number (508599).

Almost surely, 2^6909345 is an apocalyptic number.

It is an amenable number.

6909345 is a deficient number, since it is larger than the sum of its proper divisors (5297031).

6909345 is a wasteful number, since it uses less digits than its factorization.

6909345 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2961 (or 2958 counting only the distinct ones).

The product of its (nonzero) digits is 29160, while the sum is 36.

The square root of 6909345 is about 2628.5632957949. The cubic root of 6909345 is about 190.4637333570.

The spelling of 6909345 in words is "six million, nine hundred nine thousand, three hundred forty-five".