6871578 has 64 divisors (see below), whose sum is σ = 16896000. Its totient is φ = 1819584.

The previous prime is 6871573. The next prime is 6871583. The reversal of 6871578 is 8751786.

It is an interprime number because it is at equal distance from previous prime (6871573) and next prime (6871583).

It is a Harshad number since it is a multiple of its sum of digits (42).

It is not an unprimeable number, because it can be changed into a prime (6871573) by changing a digit.

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 31 ways as a sum of consecutive naturals, for example, 62988 + ... + 63096.

It is an arithmetic number, because the mean of its divisors is an integer number (264000).

Almost surely, 2^6871578 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 6871578, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (8448000).

6871578 is an abundant number, since it is smaller than the sum of its proper divisors (10024422).

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

6871578 is a wasteful number, since it uses less digits than its factorization.

6871578 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 219.

The product of its digits is 94080, while the sum is 42.

The square root of 6871578 is about 2621.3694894082. The cubic root of 6871578 is about 190.1160694306.

The spelling of 6871578 in words is "six million, eight hundred seventy-one thousand, five hundred seventy-eight".