1006871 has 4 divisors (see below), whose sum is σ = 1050672. Its totient is φ = 963072.

The previous prime is 1006861. The next prime is 1006877. The reversal of 1006871 is 1786001.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1006871 - 2¹⁴ = 990487 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (23), and also a Moran number because the ratio is a prime number: 43777 = 1006871 / (1 + 0 + 0 + 6 + 8 + 7 + 1).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1006877) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 21866 + ... + 21911.

It is an arithmetic number, because the mean of its divisors is an integer number (262668).

2^1006871 is an apocalyptic number.

1006871 is a deficient number, since it is larger than the sum of its proper divisors (43801).

1006871 is an equidigital number, since it uses as much as digits as its factorization.

1006871 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43800.

The product of its (nonzero) digits is 336, while the sum is 23.

The square root of 1006871 is about 1003.4296188572. The cubic root of 1006871 is about 100.2285107639.

The spelling of 1006871 in words is "one million, six thousand, eight hundred seventy-one".