6984640 has 112 divisors (see below), whose sum is σ = 18946368. Its totient is φ = 2433024.

The previous prime is 6984629. The next prime is 6984689. The reversal of 6984640 is 464896.

It is a self number, because there is not a number n which added to its sum of digits gives 6984640.

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, 95644 + ... + 95716.

It is an arithmetic number, because the mean of its divisors is an integer number (169164).

Almost surely, 2^6984640 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 6984640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (9473184).

6984640 is an abundant number, since it is smaller than the sum of its proper divisors (11961728).

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

6984640 is a wasteful number, since it uses less digits than its factorization.

6984640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 126 (or 116 counting only the distinct ones).

The product of its (nonzero) digits is 41472, while the sum is 37.

The square root of 6984640 is about 2642.8469497873. The cubic root of 6984640 is about 191.1530985606.

The spelling of 6984640 in words is "six million, nine hundred eighty-four thousand, six hundred forty".