6678673 has 4 divisors (see below), whose sum is σ = 6683940. Its totient is φ = 6673408.

The previous prime is 6678667. The next prime is 6678691. The reversal of 6678673 is 3768766.

6678673 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 4915089 + 1763584 = 2217^2 + 1328^2 .

It is a cyclic number.

It is not a de Polignac number, because 6678673 - 2⁵ = 6678641 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6678173) 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 3 ways as a sum of consecutive naturals, for example, 561 + ... + 3697.

It is an arithmetic number, because the mean of its divisors is an integer number (1670985).

Almost surely, 2^6678673 is an apocalyptic number.

It is an amenable number.

6678673 is a deficient number, since it is larger than the sum of its proper divisors (5267).

6678673 is a wasteful number, since it uses less digits than its factorization.

6678673 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5266.

The product of its digits is 254016, while the sum is 43.

The square root of 6678673 is about 2584.3128680560. The cubic root of 6678673 is about 188.3201219403.

Adding to 6678673 its product of digits (254016), we get a square (6932689 = 2633²).

The spelling of 6678673 in words is "six million, six hundred seventy-eight thousand, six hundred seventy-three".