6915680 has 24 divisors (see below), whose sum is σ = 16338672. Its totient is φ = 2766208.

The previous prime is 6915661. The next prime is 6915683. The reversal of 6915680 is 865196.

It is an Ulam number.

It is a self number, because there is not a number n which added to its sum of digits gives 6915680.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6915683) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 21452 + ... + 21771.

It is an arithmetic number, because the mean of its divisors is an integer number (680778).

Almost surely, 2^6915680 is an apocalyptic number.

It is an amenable number.

6915680 is an abundant number, since it is smaller than the sum of its proper divisors (9422992).

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

6915680 is a wasteful number, since it uses less digits than its factorization.

6915680 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43238 (or 43230 counting only the distinct ones).

The product of its (nonzero) digits is 12960, while the sum is 35.

The square root of 6915680 is about 2629.7680506083. The cubic root of 6915680 is about 190.5219260016.

The spelling of 6915680 in words is "six million, nine hundred fifteen thousand, six hundred eighty".