6981648 has 20 divisors (see below), whose sum is σ = 18036048. Its totient is φ = 2327200.

The previous prime is 6981631. The next prime is 6981659. The reversal of 6981648 is 8461896.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 72678 + ... + 72773.

Almost surely, 2^6981648 is an apocalyptic number.

It is an amenable number.

6981648 is an abundant number, since it is smaller than the sum of its proper divisors (11054400).

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

6981648 is a wasteful number, since it uses less digits than its factorization.

6981648 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 145462 (or 145456 counting only the distinct ones).

The product of its digits is 82944, while the sum is 42.

The square root of 6981648 is about 2642.2808329169. The cubic root of 6981648 is about 191.1258000047.

It can be divided in two parts, 698 and 1648, that added together give a triangular number (2346 = T₆₈).

The spelling of 6981648 in words is "six million, nine hundred eighty-one thousand, six hundred forty-eight".