6678613 has 12 divisors (see below), whose sum is σ = 7133220. Its totient is φ = 6245120.

The previous prime is 6678593. The next prime is 6678629. The reversal of 6678613 is 3168766.

It can be written as a sum of positive squares in 6 ways, for example, as 1580049 + 5098564 = 1257^2 + 2258^2 .

It is a de Polignac number, because none of the positive numbers 2^k-6678613 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 (6678313) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 48681 + ... + 48817.

It is an arithmetic number, because the mean of its divisors is an integer number (594435).

Almost surely, 2^6678613 is an apocalyptic number.

It is an amenable number.

6678613 is a deficient number, since it is larger than the sum of its proper divisors (454607).

6678613 is a wasteful number, since it uses less digits than its factorization.

6678613 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 248 (or 207 counting only the distinct ones).

The product of its digits is 36288, while the sum is 37.

The square root of 6678613 is about 2584.3012595284. The cubic root of 6678613 is about 188.3195579939.

The spelling of 6678613 in words is "six million, six hundred seventy-eight thousand, six hundred thirteen".