6887707 has 4 divisors (see below), whose sum is σ = 6914160. Its totient is φ = 6861256.

The previous prime is 6887681. The next prime is 6887753. The reversal of 6887707 is 7077886.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-6887707 is a prime.

It is a Duffinian number.

6887707 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (6887767) 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 3 ways as a sum of consecutive naturals, for example, 12832 + ... + 13357.

It is an arithmetic number, because the mean of its divisors is an integer number (1728540).

Almost surely, 2^6887707 is an apocalyptic number.

6887707 is a deficient number, since it is larger than the sum of its proper divisors (26453).

6887707 is a wasteful number, since it uses less digits than its factorization.

6887707 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26452.

The product of its (nonzero) digits is 131712, while the sum is 43.

The square root of 6887707 is about 2624.4441316210. Note that the first 3 decimals coincide. The cubic root of 6887707 is about 190.2647003111.

The spelling of 6887707 in words is "six million, eight hundred eighty-seven thousand, seven hundred seven".