6478 has 8 divisors (see below), whose sum is σ = 10080. Its totient is φ = 3120.

The previous prime is 6473. The next prime is 6481. The reversal of 6478 is 8746.

6478 is nontrivially palindromic in base 6.

6478 is an esthetic number in base 9, because in such base its adjacent digits differ by 1.

It is a sphenic number, since it is the product of 3 distinct primes.

6478 is an undulating number in base 9.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6473) by changing a digit.

6478 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

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 in 3 ways as a sum of consecutive naturals, for example, 43 + ... + 121.

It is an arithmetic number, because the mean of its divisors is an integer number (1260).

2⁶⁴⁷⁸ is an apocalyptic number.

6478 is a deficient number, since it is larger than the sum of its proper divisors (3602).

6478 is a wasteful number, since it uses less digits than its factorization.

6478 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 122.

The product of its digits is 1344, while the sum is 25.

The square root of 6478 is about 80.4860236314. The cubic root of 6478 is about 18.6414767936.

It can be divided in two parts, 6 and 478, that added together give a palindrome (484).

The spelling of 6478 in words is "six thousand, four hundred seventy-eight".