6343921 has 8 divisors (see below), whose sum is σ = 6480000. Its totient is φ = 6209280.

The previous prime is 6343903. The next prime is 6343927. The reversal of 6343921 is 1293436.

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 6343921 - 2⁷ = 6343793 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 6343921.

It is not an unprimeable number, because it can be changed into a prime (6343927) by changing a digit.

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 in 7 ways as a sum of consecutive naturals, for example, 13905 + ... + 14353.

It is an arithmetic number, because the mean of its divisors is an integer number (810000).

Almost surely, 2^6343921 is an apocalyptic number.

It is an amenable number.

6343921 is a deficient number, since it is larger than the sum of its proper divisors (136079).

6343921 is a wasteful number, since it uses less digits than its factorization.

6343921 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 719.

The product of its digits is 3888, while the sum is 28.

The square root of 6343921 is about 2518.7141560725. The cubic root of 6343921 is about 185.1196790745.

The spelling of 6343921 in words is "six million, three hundred forty-three thousand, nine hundred twenty-one".