8675821 has 12 divisors (see below), whose sum is σ = 10899616. Its totient is φ = 6759720.

The previous prime is 8675813. The next prime is 8675833. The reversal of 8675821 is 1285768.

It is not a de Polignac number, because 8675821 - 2³ = 8675813 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8675861) 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 11 ways as a sum of consecutive naturals, for example, 4275 + ... + 5968.

Almost surely, 2^8675821 is an apocalyptic number.

It is an amenable number.

8675821 is a deficient number, since it is larger than the sum of its proper divisors (2223795).

8675821 is a wasteful number, since it uses less digits than its factorization.

8675821 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10272 (or 10261 counting only the distinct ones).

The product of its digits is 26880, while the sum is 37.

The square root of 8675821 is about 2945.4746646339. The cubic root of 8675821 is about 205.4803015278.

The spelling of 8675821 in words is "eight million, six hundred seventy-five thousand, eight hundred twenty-one".