6430643 has 8 divisors (see below), whose sum is σ = 6576528. Its totient is φ = 6286464.

The previous prime is 6430621. The next prime is 6430661. The reversal of 6430643 is 3460346.

6430643 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

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 6430643 - 2⁶ = 6430579 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6430343) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 9680 + ... + 10322.

It is an arithmetic number, because the mean of its divisors is an integer number (822066).

Almost surely, 2^6430643 is an apocalyptic number.

6430643 is a deficient number, since it is larger than the sum of its proper divisors (145885).

6430643 is a wasteful number, since it uses less digits than its factorization.

6430643 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 853.

The product of its (nonzero) digits is 5184, while the sum is 26.

The square root of 6430643 is about 2535.8712506750. The cubic root of 6430643 is about 185.9593987766.

Adding to 6430643 its reverse (3460346), we get a palindrome (9890989).

The spelling of 6430643 in words is "six million, four hundred thirty thousand, six hundred forty-three".