6616879 has 2 divisors, whose sum is σ = 6616880. Its totient is φ = 6616878.

The previous prime is 6616873. The next prime is 6616931. The reversal of 6616879 is 9786166.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 6616879 - 2³ = 6616871 is a prime.

6616879 is a lucky number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6616871) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3308439 + 3308440.

It is an arithmetic number, because the mean of its divisors is an integer number (3308440).

Almost surely, 2^6616879 is an apocalyptic number.

6616879 is a deficient number, since it is larger than the sum of its proper divisors (1).

6616879 is an equidigital number, since it uses as much as digits as its factorization.

6616879 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 108864, while the sum is 43.

The square root of 6616879 is about 2572.3294890041. The cubic root of 6616879 is about 187.7375147061.

The spelling of 6616879 in words is "six million, six hundred sixteen thousand, eight hundred seventy-nine".