6571872 has 72 divisors (see below), whose sum is σ = 19688760. Its totient is φ = 2073600.

The previous prime is 6571871. The next prime is 6571879. The reversal of 6571872 is 2781756.

6571872 is a `hidden beast` number, since 6 + 571 + 87 + 2 = 666.

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 congruent number.

It is not an unprimeable number, because it can be changed into a prime (6571871) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4872 + ... + 6072.

It is an arithmetic number, because the mean of its divisors is an integer number (273455).

Almost surely, 2^6571872 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 6571872, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (9844380).

6571872 is an abundant number, since it is smaller than the sum of its proper divisors (13116888).

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

6571872 is a wasteful number, since it uses less digits than its factorization.

6571872 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1236 (or 1225 counting only the distinct ones).

The product of its digits is 23520, while the sum is 36.

The square root of 6571872 is about 2563.5662659662. The cubic root of 6571872 is about 187.3108920010.

The spelling of 6571872 in words is "six million, five hundred seventy-one thousand, eight hundred seventy-two".