8678321 has 4 divisors (see below), whose sum is σ = 8684544. Its totient is φ = 8672100.

The previous prime is 8678311. The next prime is 8678323. The reversal of 8678321 is 1238768.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 8678321 - 2¹⁰ = 8677297 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (8678323) 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 3 ways as a sum of consecutive naturals, for example, 56 + ... + 4166.

It is an arithmetic number, because the mean of its divisors is an integer number (2171136).

Almost surely, 2^8678321 is an apocalyptic number.

It is an amenable number.

8678321 is a deficient number, since it is larger than the sum of its proper divisors (6223).

8678321 is a wasteful number, since it uses less digits than its factorization.

8678321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6222.

The product of its digits is 16128, while the sum is 35.

The square root of 8678321 is about 2945.8990138835. The cubic root of 8678321 is about 205.5000365062.

The spelling of 8678321 in words is "eight million, six hundred seventy-eight thousand, three hundred twenty-one".