6405424 has 10 divisors (see below), whose sum is σ = 12410540. Its totient is φ = 3202704.

The previous prime is 6405397. The next prime is 6405457. The reversal of 6405424 is 4245046.

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 as a sum of consecutive naturals, namely, 200154 + ... + 200185.

It is an arithmetic number, because the mean of its divisors is an integer number (1241054).

Almost surely, 2^6405424 is an apocalyptic number.

It is an amenable number.

6405424 is a deficient number, since it is larger than the sum of its proper divisors (6005116).

6405424 is a wasteful number, since it uses less digits than its factorization.

6405424 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 400347 (or 400341 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 25.

The square root of 6405424 is about 2530.8939132251. The cubic root of 6405424 is about 185.7159884882.

The spelling of 6405424 in words is "six million, four hundred five thousand, four hundred twenty-four".