8680321 has 16 divisors (see below), whose sum is σ = 9959040. Its totient is φ = 7499520.

The previous prime is 8680313. The next prime is 8680327. The reversal of 8680321 is 1230868.

It is a cyclic number.

It is not a de Polignac number, because 8680321 - 2³ = 8680313 is a prime.

8680321 is a lucky number.

It is a self number, because there is not a number n which added to its sum of digits gives 8680321.

It is not an unprimeable number, because it can be changed into a prime (8680327) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 27756 + ... + 28066.

It is an arithmetic number, because the mean of its divisors is an integer number (622440).

Almost surely, 2^8680321 is an apocalyptic number.

It is an amenable number.

8680321 is a deficient number, since it is larger than the sum of its proper divisors (1278719).

8680321 is a wasteful number, since it uses less digits than its factorization.

8680321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 456.

The product of its (nonzero) digits is 2304, while the sum is 28.

The square root of 8680321 is about 2946.2384492773. The cubic root of 8680321 is about 205.5158217602.

The spelling of 8680321 in words is "eight million, six hundred eighty thousand, three hundred twenty-one".