6897856 has 56 divisors (see below), whose sum is σ = 15910560. Its totient is φ = 2906112.

The previous prime is 6897829. The next prime is 6897857. The reversal of 6897856 is 6587986.

It is a tau number, because it is divible by the number of its divisors (56).

It is not an unprimeable number, because it can be changed into a prime (6897857) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 39786 + ... + 39958.

Almost surely, 2^6897856 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 6897856, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (7955280).

6897856 is an abundant number, since it is smaller than the sum of its proper divisors (9012704).

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

6897856 is a wasteful number, since it uses less digits than its factorization.

6897856 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 281 (or 271 counting only the distinct ones).

The product of its digits is 725760, while the sum is 49.

The square root of 6897856 is about 2626.3769721805. The cubic root of 6897856 is about 190.3581057933.

The spelling of 6897856 in words is "six million, eight hundred ninety-seven thousand, eight hundred fifty-six".