6345809 has 8 divisors (see below), whose sum is σ = 6620160. Its totient is φ = 6075216.

The previous prime is 6345803. The next prime is 6345821. The reversal of 6345809 is 9085436.

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

It is a cyclic number.

It is not a de Polignac number, because 6345809 - 2¹⁶ = 6280273 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6345803) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2822 + ... + 4544.

It is an arithmetic number, because the mean of its divisors is an integer number (827520).

Almost surely, 2^6345809 is an apocalyptic number.

It is an amenable number.

6345809 is a deficient number, since it is larger than the sum of its proper divisors (274351).

6345809 is a wasteful number, since it uses less digits than its factorization.

6345809 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1879.

The product of its (nonzero) digits is 25920, while the sum is 35.

The square root of 6345809 is about 2519.0889226067. The cubic root of 6345809 is about 185.1380416029.

The spelling of 6345809 in words is "six million, three hundred forty-five thousand, eight hundred nine".