7986871 has 6 divisors (see below), whose sum is σ = 8253816. Its totient is φ = 7728300.

The previous prime is 7986829. The next prime is 7986877. The reversal of 7986871 is 1786897.

It is not a de Polignac number, because 7986871 - 2⁷ = 7986743 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7986877) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 3195 + ... + 5116.

It is an arithmetic number, because the mean of its divisors is an integer number (1375636).

Almost surely, 2^7986871 is an apocalyptic number.

7986871 is a deficient number, since it is larger than the sum of its proper divisors (266945).

7986871 is an equidigital number, since it uses as much as digits as its factorization.

7986871 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8373 (or 8342 counting only the distinct ones).

The product of its digits is 169344, while the sum is 46.

The square root of 7986871 is about 2826.1052705092. The cubic root of 7986871 is about 199.8905317611.

The spelling of 7986871 in words is "seven million, nine hundred eighty-six thousand, eight hundred seventy-one".