6981912 has 72 divisors (see below), whose sum is σ = 22007700. Its totient is φ = 1993824.

The previous prime is 6981889. The next prime is 6981943. The reversal of 6981912 is 2191896.

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

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 2539 + ... + 4517.

Almost surely, 2^6981912 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 6981912, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (11003850).

6981912 is an abundant number, since it is smaller than the sum of its proper divisors (15025788).

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

6981912 is a wasteful number, since it uses less digits than its factorization.

6981912 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2005 (or 1991 counting only the distinct ones).

The product of its digits is 7776, while the sum is 36.

The square root of 6981912 is about 2642.3307892843. The cubic root of 6981912 is about 191.1282090145.

The spelling of 6981912 in words is "six million, nine hundred eighty-one thousand, nine hundred twelve".