6917680 has 80 divisors (see below), whose sum is σ = 20070144. Its totient is φ = 2154240.

The previous prime is 6917663. The next prime is 6917693. The reversal of 6917680 is 867196.

It is a tau number, because it is divible by the number of its divisors (80).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5599 + ... + 6721.

Almost surely, 2^6917680 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 6917680, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (10035072).

6917680 is an abundant number, since it is smaller than the sum of its proper divisors (13152464).

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

6917680 is a wasteful number, since it uses less digits than its factorization.

6917680 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1154 (or 1148 counting only the distinct ones).

The product of its (nonzero) digits is 18144, while the sum is 37.

The square root of 6917680 is about 2630.1482847931. The cubic root of 6917680 is about 190.5402904105.

The spelling of 6917680 in words is "six million, nine hundred seventeen thousand, six hundred eighty".