6987744 has 72 divisors (see below), whose sum is σ = 20933640. Its totient is φ = 2204928.

The previous prime is 6987737. The next prime is 6987751. The reversal of 6987744 is 4477896.

It is an interprime number because it is at equal distance from previous prime (6987737) and next prime (6987751).

It is a tau number, because it is divible by the number of its divisors (72).

It is a self number, because there is not a number n which added to its sum of digits gives 6987744.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4834 + ... + 6110.

It is an arithmetic number, because the mean of its divisors is an integer number (290745).

Almost surely, 2^6987744 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 6987744, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (10466820).

6987744 is an abundant number, since it is smaller than the sum of its proper divisors (13945896).

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

6987744 is a wasteful number, since it uses less digits than its factorization.

6987744 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1312 (or 1301 counting only the distinct ones).

The product of its digits is 338688, while the sum is 45.

The square root of 6987744 is about 2643.4341300664. The cubic root of 6987744 is about 191.1814107497.

The spelling of 6987744 in words is "six million, nine hundred eighty-seven thousand, seven hundred forty-four".