6628613 has 2 divisors, whose sum is σ = 6628614. Its totient is φ = 6628612.

The previous prime is 6628607. The next prime is 6628621. The reversal of 6628613 is 3168266.

6628613 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 5299204 + 1329409 = 2302^2 + 1153^2 .

It is a cyclic number.

It is not a de Polignac number, because 6628613 - 2⁸ = 6628357 is a prime.

It is equal to p₄₅₂₉₉₃ and since 6628613 and 452993 have the same sum of digits, it is a Honaker prime.

It is a self number, because there is not a number n which added to its sum of digits gives 6628613.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6628673) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3314306 + 3314307.

It is an arithmetic number, because the mean of its divisors is an integer number (3314307).

Almost surely, 2^6628613 is an apocalyptic number.

It is an amenable number.

6628613 is a deficient number, since it is larger than the sum of its proper divisors (1).

6628613 is an equidigital number, since it uses as much as digits as its factorization.

6628613 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 10368, while the sum is 32.

The square root of 6628613 is about 2574.6092907469. The cubic root of 6628613 is about 187.8484235452.

The spelling of 6628613 in words is "six million, six hundred twenty-eight thousand, six hundred thirteen".