6378403 has 2 divisors, whose sum is σ = 6378404. Its totient is φ = 6378402.

The previous prime is 6378401. The next prime is 6378409. The reversal of 6378403 is 3048736.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 6378403 - 2¹ = 6378401 is a prime.

Together with 6378401, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (6378401) 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 as a sum of consecutive naturals, namely, 3189201 + 3189202.

It is an arithmetic number, because the mean of its divisors is an integer number (3189202).

Almost surely, 2^6378403 is an apocalyptic number.

6378403 is a deficient number, since it is larger than the sum of its proper divisors (1).

6378403 is an equidigital number, since it uses as much as digits as its factorization.

6378403 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 12096, while the sum is 31.

The square root of 6378403 is about 2525.5500391004. The cubic root of 6378403 is about 185.4544755004.

The spelling of 6378403 in words is "six million, three hundred seventy-eight thousand, four hundred three".