6378743 has 4 divisors (see below), whose sum is σ = 7290000. Its totient is φ = 5467488.

The previous prime is 6378733. The next prime is 6378761. The reversal of 6378743 is 3478736.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 6378743 - 2⁸ = 6378487 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 6378697 and 6378706.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6378703) 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 3 ways as a sum of consecutive naturals, for example, 455618 + ... + 455631.

It is an arithmetic number, because the mean of its divisors is an integer number (1822500).

Almost surely, 2^6378743 is an apocalyptic number.

6378743 is a deficient number, since it is larger than the sum of its proper divisors (911257).

6378743 is an equidigital number, since it uses as much as digits as its factorization.

6378743 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 911256.

The product of its digits is 84672, while the sum is 38.

The square root of 6378743 is about 2525.6173502730. The cubic root of 6378743 is about 185.4577706513.

The spelling of 6378743 in words is "six million, three hundred seventy-eight thousand, seven hundred forty-three".