6865780 has 12 divisors (see below), whose sum is σ = 14418180. Its totient is φ = 2746304.

The previous prime is 6865769. The next prime is 6865847. The reversal of 6865780 is 875686.

It can be written as a sum of positive squares in 2 ways, for example, as 4639716 + 2226064 = 2154^2 + 1492^2 .

It is a congruent 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, 171625 + ... + 171664.

It is an arithmetic number, because the mean of its divisors is an integer number (1201515).

Almost surely, 2^6865780 is an apocalyptic number.

It is an amenable number.

6865780 is an abundant number, since it is smaller than the sum of its proper divisors (7552400).

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

6865780 is a wasteful number, since it uses less digits than its factorization.

6865780 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 343298 (or 343296 counting only the distinct ones).

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

The square root of 6865780 is about 2620.2633455437. The cubic root of 6865780 is about 190.0625832618.

The spelling of 6865780 in words is "six million, eight hundred sixty-five thousand, seven hundred eighty".