8621871 has 8 divisors (see below), whose sum is σ = 11527680. Its totient is φ = 5731992.

The previous prime is 8621869. The next prime is 8621897. The reversal of 8621871 is 1781268.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 8621871 - 2¹ = 8621869 is a prime.

8621871 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8621831) 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 7 ways as a sum of consecutive naturals, for example, 2655 + ... + 4928.

It is an arithmetic number, because the mean of its divisors is an integer number (1440960).

Almost surely, 2^8621871 is an apocalyptic number.

8621871 is a deficient number, since it is larger than the sum of its proper divisors (2905809).

8621871 is a wasteful number, since it uses less digits than its factorization.

8621871 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7965.

The product of its digits is 5376, while the sum is 33.

The square root of 8621871 is about 2936.3022664569. The cubic root of 8621871 is about 205.0534938724.

The spelling of 8621871 in words is "eight million, six hundred twenty-one thousand, eight hundred seventy-one".