6348809 has 4 divisors (see below), whose sum is σ = 6503700. Its totient is φ = 6193920.

The previous prime is 6348799. The next prime is 6348827. The reversal of 6348809 is 9088436.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 3553225 + 2795584 = 1885^2 + 1672^2 .

It is a cyclic number.

It is not a de Polignac number, because 6348809 - 2¹⁶ = 6283273 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6348829) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 77384 + ... + 77465.

It is an arithmetic number, because the mean of its divisors is an integer number (1625925).

Almost surely, 2^6348809 is an apocalyptic number.

It is an amenable number.

6348809 is a deficient number, since it is larger than the sum of its proper divisors (154891).

6348809 is a wasteful number, since it uses less digits than its factorization.

6348809 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 154890.

The product of its (nonzero) digits is 41472, while the sum is 38.

The square root of 6348809 is about 2519.6843056224. The cubic root of 6348809 is about 185.1672118591.

The spelling of 6348809 in words is "six million, three hundred forty-eight thousand, eight hundred nine".