6626879 has 4 divisors (see below), whose sum is σ = 7573584. Its totient is φ = 5680176.

The previous prime is 6626863. The next prime is 6626881. The reversal of 6626879 is 9786266.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 6626879 - 2⁴ = 6626863 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 (6626849) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 473342 + ... + 473355.

It is an arithmetic number, because the mean of its divisors is an integer number (1893396).

Almost surely, 2^6626879 is an apocalyptic number.

6626879 is a deficient number, since it is larger than the sum of its proper divisors (946705).

6626879 is an equidigital number, since it uses as much as digits as its factorization.

6626879 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 946704.

The product of its digits is 217728, while the sum is 44.

The square root of 6626879 is about 2574.2725185963. The cubic root of 6626879 is about 187.8320421608.

The spelling of 6626879 in words is "six million, six hundred twenty-six thousand, eight hundred seventy-nine".