6345845 has 24 divisors (see below), whose sum is σ = 8876952. Its totient is φ = 4336640.

The previous prime is 6345839. The next prime is 6345851. The reversal of 6345845 is 5485436.

It is an interprime number because it is at equal distance from previous prime (6345839) and next prime (6345851).

It can be written as a sum of positive squares in 4 ways, for example, as 165649 + 6180196 = 407^2 + 2486^2 .

It is a de Polignac number, because none of the positive numbers 2^k-6345845 is a prime.

It is a d-powerful number, because it can be written as 6⁸ + 3¹¹ + 4⁷ + 5⁴ + 8⁶ + 4¹¹ + 5⁶ .

It is a Duffinian number.

It is a Curzon number.

It is a congruent 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 23 ways as a sum of consecutive naturals, for example, 9977 + ... + 10593.

It is an arithmetic number, because the mean of its divisors is an integer number (369873).

Almost surely, 2^6345845 is an apocalyptic number.

6345845 is the 2057-th pentagonal number.

It is an amenable number.

6345845 is a deficient number, since it is larger than the sum of its proper divisors (2531107).

6345845 is a wasteful number, since it uses less digits than its factorization.

6345845 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 661 (or 650 counting only the distinct ones).

The product of its digits is 57600, while the sum is 35.

The square root of 6345845 is about 2519.0960680371. The cubic root of 6345845 is about 185.1383917004.

The spelling of 6345845 in words is "six million, three hundred forty-five thousand, eight hundred forty-five".