6887605 has 8 divisors (see below), whose sum is σ = 8296632. Its totient is φ = 5489088.

The previous prime is 6887599. The next prime is 6887609. The reversal of 6887605 is 5067886.

It can be written as a sum of positive squares in 4 ways, for example, as 323761 + 6563844 = 569^2 + 2562^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 6887605 - 2⁹ = 6887093 is a prime.

It is a Duffinian number.

6887605 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6887609) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 1102 + ... + 3871.

It is an arithmetic number, because the mean of its divisors is an integer number (1037079).

Almost surely, 2^6887605 is an apocalyptic number.

It is an amenable number.

6887605 is a deficient number, since it is larger than the sum of its proper divisors (1409027).

6887605 is a wasteful number, since it uses less digits than its factorization.

6887605 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5255.

The product of its (nonzero) digits is 80640, while the sum is 40.

The square root of 6887605 is about 2624.4246988626. The cubic root of 6887605 is about 190.2637610969.

The spelling of 6887605 in words is "six million, eight hundred eighty-seven thousand, six hundred five".