6779899 has 4 divisors (see below), whose sum is σ = 7748464. Its totient is φ = 5811336.

The previous prime is 6779863. The next prime is 6779911. The reversal of 6779899 is 9989776.

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 6779899 - 2⁷ = 6779771 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6779849) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 484272 + ... + 484285.

It is an arithmetic number, because the mean of its divisors is an integer number (1937116).

Almost surely, 2^6779899 is an apocalyptic number.

6779899 is a deficient number, since it is larger than the sum of its proper divisors (968565).

6779899 is an equidigital number, since it uses as much as digits as its factorization.

6779899 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 968564.

The product of its digits is 1714608, while the sum is 55.

The square root of 6779899 is about 2603.8239187779. The cubic root of 6779899 is about 189.2667863424.

The spelling of 6779899 in words is "six million, seven hundred seventy-nine thousand, eight hundred ninety-nine".