6405430 has 32 divisors (see below), whose sum is σ = 12519360. Its totient is φ = 2350080.

The previous prime is 6405397. The next prime is 6405457. The reversal of 6405430 is 345046.

It is a d-powerful number, because it can be written as 6⁸ + 4³ + 0 + 5 + 4¹¹ + 3¹² + 0 .

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6511 + ... + 7429.

It is an arithmetic number, because the mean of its divisors is an integer number (391230).

Almost surely, 2^6405430 is an apocalyptic number.

6405430 is a deficient number, since it is larger than the sum of its proper divisors (6113930).

6405430 is a wasteful number, since it uses less digits than its factorization.

6405430 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 984.

The product of its (nonzero) digits is 1440, while the sum is 22.

The square root of 6405430 is about 2530.8950985768. The cubic root of 6405430 is about 185.7160464753.

The spelling of 6405430 in words is "six million, four hundred five thousand, four hundred thirty".