6981040 has 40 divisors (see below), whose sum is σ = 17708688. Its totient is φ = 2538240.

The previous prime is 6981011. The next prime is 6981043. The reversal of 6981040 is 401896.

It is a tau number, because it is divible by the number of its divisors (40).

It is not an unprimeable number, because it can be changed into a prime (6981043) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3087 + ... + 4846.

Almost surely, 2^6981040 is an apocalyptic number.

It is an amenable number.

6981040 is an abundant number, since it is smaller than the sum of its proper divisors (10727648).

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

6981040 is a wasteful number, since it uses less digits than its factorization.

6981040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7957 (or 7951 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 28.

The square root of 6981040 is about 2642.1657782963. The cubic root of 6981040 is about 191.1202517512.

The spelling of 6981040 in words is "six million, nine hundred eighty-one thousand, forty".