6877780 has 48 divisors (see below), whose sum is σ = 17781120. Its totient is φ = 2176128.

The previous prime is 6877771. The next prime is 6877789. The reversal of 6877780 is 877786.

It is an interprime number because it is at equal distance from previous prime (6877771) and next prime (6877789).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6877789) 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 15 ways as a sum of consecutive naturals, for example, 70 + ... + 3709.

It is an arithmetic number, because the mean of its divisors is an integer number (370440).

Almost surely, 2^6877780 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 6877780, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (8890560).

6877780 is an abundant number, since it is smaller than the sum of its proper divisors (10903340).

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

6877780 is a wasteful number, since it uses less digits than its factorization.

6877780 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3808 (or 3806 counting only the distinct ones).

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

The square root of 6877780 is about 2622.5521920450. The cubic root of 6877780 is about 190.1732491791.

The spelling of 6877780 in words is "six million, eight hundred seventy-seven thousand, seven hundred eighty".