6995840 has 64 divisors (see below), whose sum is σ = 17735760. Its totient is φ = 2629632.

The previous prime is 6995839. The next prime is 6995851. The reversal of 6995840 is 485996.

It is a tau number, because it is divible by the number of its divisors (64).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10559 + ... + 11201.

Almost surely, 2^6995840 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 6995840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (8867880).

6995840 is an abundant number, since it is smaller than the sum of its proper divisors (10739920).

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

6995840 is a wasteful number, since it uses less digits than its factorization.

6995840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 679 (or 667 counting only the distinct ones).

The product of its (nonzero) digits is 77760, while the sum is 41.

The square root of 6995840 is about 2644.9650281242. The cubic root of 6995840 is about 191.2552165123.

The spelling of 6995840 in words is "six million, nine hundred ninety-five thousand, eight hundred forty".