6887140 has 24 divisors (see below), whose sum is σ = 15576120. Its totient is φ = 2542848.

The previous prime is 6887137. The next prime is 6887147. The reversal of 6887140 is 417886.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 1764 + 6885376 = 42^2 + 2624^2 .

It is a junction number, because it is equal to n+sod(n) for n = 6887096 and 6887105.

It is not an unprimeable number, because it can be changed into a prime (6887147) 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, 12985 + ... + 13504.

It is an arithmetic number, because the mean of its divisors is an integer number (649005).

Almost surely, 2^6887140 is an apocalyptic number.

It is an amenable number.

6887140 is an abundant number, since it is smaller than the sum of its proper divisors (8688980).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

6887140 is a wasteful number, since it uses less digits than its factorization.

6887140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26511 (or 26509 counting only the distinct ones).

The product of its (nonzero) digits is 10752, while the sum is 34.

The square root of 6887140 is about 2624.3361065229. The cubic root of 6887140 is about 190.2594792680.

The spelling of 6887140 in words is "six million, eight hundred eighty-seven thousand, one hundred forty".