6916640 has 48 divisors (see below), whose sum is σ = 16511040. Its totient is φ = 2737920.

The previous prime is 6916633. The next prime is 6916673. The reversal of 6916640 is 466196.

It is a Harshad number since it is a multiple of its sum of digits (32).

It is a junction number, because it is equal to n+sod(n) for n = 6916597 and 6916606.

It is a congruent number.

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, 22085 + ... + 22395.

It is an arithmetic number, because the mean of its divisors is an integer number (343980).

Almost surely, 2^6916640 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 6916640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (8255520).

6916640 is an abundant number, since it is smaller than the sum of its proper divisors (9594400).

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

6916640 is a wasteful number, since it uses less digits than its factorization.

6916640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 465 (or 457 counting only the distinct ones).

The product of its (nonzero) digits is 7776, while the sum is 32.

The square root of 6916640 is about 2629.9505698777. The cubic root of 6916640 is about 190.5307413597.

The spelling of 6916640 in words is "six million, nine hundred sixteen thousand, six hundred forty".