6430891 has 8 divisors (see below), whose sum is σ = 6652800. Its totient is φ = 6212160.

The previous prime is 6430883. The next prime is 6430901. The reversal of 6430891 is 1980346.

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 6430891 - 2³ = 6430883 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6430841) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3750 + ... + 5188.

It is an arithmetic number, because the mean of its divisors is an integer number (831600).

Almost surely, 2^6430891 is an apocalyptic number.

6430891 is a deficient number, since it is larger than the sum of its proper divisors (221909).

6430891 is a wasteful number, since it uses less digits than its factorization.

6430891 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1589.

The product of its (nonzero) digits is 5184, while the sum is 31.

The square root of 6430891 is about 2535.9201485851. The cubic root of 6430891 is about 185.9617892757.

The spelling of 6430891 in words is "six million, four hundred thirty thousand, eight hundred ninety-one".