6879505 has 4 divisors (see below), whose sum is σ = 8255412. Its totient is φ = 5503600.

The previous prime is 6879491. The next prime is 6879511. The reversal of 6879505 is 5059786.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 5059786 = 2 ⋅2529893.

It can be written as a sum of positive squares in 2 ways, for example, as 3196944 + 3682561 = 1788^2 + 1919^2 .

It is not a de Polignac number, because 6879505 - 2¹⁷ = 6748433 is a prime.

It is an Ulam number.

It is a Duffinian number.

6879505 is a lucky number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 687946 + ... + 687955.

It is an arithmetic number, because the mean of its divisors is an integer number (2063853).

Almost surely, 2^6879505 is an apocalyptic number.

It is an amenable number.

6879505 is a deficient number, since it is larger than the sum of its proper divisors (1375907).

6879505 is a wasteful number, since it uses less digits than its factorization.

6879505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1375906.

The product of its (nonzero) digits is 75600, while the sum is 40.

The square root of 6879505 is about 2622.8810495331. The cubic root of 6879505 is about 190.1891468201.

The spelling of 6879505 in words is "six million, eight hundred seventy-nine thousand, five hundred five".