6404843 has 4 divisors (see below), whose sum is σ = 6741960. Its totient is φ = 6067728.

The previous prime is 6404837. The next prime is 6404873. The reversal of 6404843 is 3484046.

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

It is a cyclic number.

It is not a de Polignac number, because 6404843 - 2⁶ = 6404779 is a prime.

It is not an unprimeable number, because it can be changed into a prime (6404873) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 168530 + ... + 168567.

It is an arithmetic number, because the mean of its divisors is an integer number (1685490).

Almost surely, 2^6404843 is an apocalyptic number.

6404843 is a deficient number, since it is larger than the sum of its proper divisors (337117).

6404843 is a wasteful number, since it uses less digits than its factorization.

6404843 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 337116.

The product of its (nonzero) digits is 9216, while the sum is 29.

The square root of 6404843 is about 2530.7791290431. The cubic root of 6404843 is about 185.7103732340.

Adding to 6404843 its reverse (3484046), we get a palindrome (9888889).

The spelling of 6404843 in words is "six million, four hundred four thousand, eight hundred forty-three".