8921671 has 8 divisors (see below), whose sum is σ = 9788688. Its totient is φ = 8064000.

The previous prime is 8921669. The next prime is 8921701. The reversal of 8921671 is 1761298.

It is a happy number.

8921671 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is not a de Polignac number, because 8921671 - 2¹ = 8921669 is a prime.

It is a Duffinian number.

8921671 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8921071) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 250 + ... + 4231.

It is an arithmetic number, because the mean of its divisors is an integer number (1223586).

Almost surely, 2^8921671 is an apocalyptic number.

8921671 is a deficient number, since it is larger than the sum of its proper divisors (867017).

8921671 is a wasteful number, since it uses less digits than its factorization.

8921671 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4673.

The product of its digits is 6048, while the sum is 34.

The square root of 8921671 is about 2986.9166376047. The cubic root of 8921671 is about 207.4031754195.

It can be divided in two parts, 89216 and 71, that multiplied together give a palindrome (6334336).

The spelling of 8921671 in words is "eight million, nine hundred twenty-one thousand, six hundred seventy-one".