6427 has 2 divisors, whose sum is σ = 6428.
Its totient is φ = 6426.
The previous prime is 6421. The next prime is 6449. The reversal of 6427 is 7246.
6427 is an esthetic number in base 4, because in such base its adjacent digits differ by 1.
It is a weak prime.
It is a cyclic number.
It is not a de Polignac number, because 6427 - 27 = 6299 is a prime.
It is a Chen prime.
6427 is a lucky number.
It is a nialpdrome in base 9.
It is not a weakly prime, because it can be changed into another prime (6421) by changing a digit.
It is a pernicious number, because its binary representation contains a prime number (7) of ones.
It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3213 + 3214.
It is an arithmetic number, because the mean of its divisors is an integer number (3214).
6427 is a deficient number, since it is larger than the sum of its proper divisors (1).
6427 is an equidigital number, since it uses as much as digits as its factorization.
6427 is an odious number, because the sum of its binary digits is odd.
The product of its digits is 336, while the sum is 19.
The square root of 6427 is about 80.1685723959.
The cubic root of 6427 is about 18.5924276418.
Adding to 6427 its sum of digits (19), we get a palindrome (6446).
It can be divided in two parts, 64 and 27, that multiplied together give a cube (1728 = 123).
The spelling of 6427 in words is "six thousand, four hundred twenty-seven".