6343891 has 8 divisors (see below), whose sum is σ = 6711120. Its totient is φ = 5980032.

The previous prime is 6343879. The next prime is 6343901. The reversal of 6343891 is 1983436.

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 6343891 - 2⁵ = 6343859 is a prime.

It is a Duffinian number.

6343891 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (6343801) 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, 3711 + ... + 5143.

It is an arithmetic number, because the mean of its divisors is an integer number (838890).

Almost surely, 2^6343891 is an apocalyptic number.

6343891 is a deficient number, since it is larger than the sum of its proper divisors (367229).

6343891 is a wasteful number, since it uses less digits than its factorization.

6343891 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1685.

The product of its digits is 15552, while the sum is 34.

The square root of 6343891 is about 2518.7082006457. The cubic root of 6343891 is about 185.1193872676.

The spelling of 6343891 in words is "six million, three hundred forty-three thousand, eight hundred ninety-one".