6871720 has 16 divisors (see below), whose sum is σ = 15461460. Its totient is φ = 2748672.

The previous prime is 6871717. The next prime is 6871759. The reversal of 6871720 is 271786.

It is a happy number.

6871720 is nontrivially palindromic in base 6.

It can be written as a sum of positive squares in 2 ways, for example, as 6728836 + 142884 = 2594^2 + 378^2 .

It is an Ulam number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 85857 + ... + 85936.

Almost surely, 2^6871720 is an apocalyptic number.

It is an amenable number.

6871720 is an abundant number, since it is smaller than the sum of its proper divisors (8589740).

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

6871720 is a wasteful number, since it uses less digits than its factorization.

6871720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 171804 (or 171800 counting only the distinct ones).

The product of its (nonzero) digits is 4704, while the sum is 31.

The square root of 6871720 is about 2621.3965743473. The cubic root of 6871720 is about 190.1173789937.

The spelling of 6871720 in words is "six million, eight hundred seventy-one thousand, seven hundred twenty".