6865680 has 40 divisors (see below), whose sum is σ = 21284352. Its totient is φ = 1830784.

The previous prime is 6865679. The next prime is 6865693. The reversal of 6865680 is 865686.

It is a tau number, because it is divible by the number of its divisors (40).

It is a Smith number, since the sum of its digits (39) coincides with the sum of the digits of its prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14064 + ... + 14543.

Almost surely, 2^6865680 is an apocalyptic number.

6865680 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

6865680 is an abundant number, since it is smaller than the sum of its proper divisors (14418672).

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

6865680 is a wasteful number, since it uses less digits than its factorization.

6865680 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28623 (or 28617 counting only the distinct ones).

The product of its (nonzero) digits is 69120, while the sum is 39.

The square root of 6865680 is about 2620.2442634228. The cubic root of 6865680 is about 190.0616605043.

The spelling of 6865680 in words is "six million, eight hundred sixty-five thousand, six hundred eighty".