4678321 has 2 divisors, whose sum is σ = 4678322. Its totient is φ = 4678320.

The previous prime is 4678319. The next prime is 4678327. The reversal of 4678321 is 1238764.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 3150625 + 1527696 = 1775^2 + 1236^2 .

It is a cyclic number.

It is not a de Polignac number, because 4678321 - 2¹ = 4678319 is a prime.

Together with 4678319, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (4678327) 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 as a sum of consecutive naturals, namely, 2339160 + 2339161.

It is an arithmetic number, because the mean of its divisors is an integer number (2339161).

Almost surely, 2^4678321 is an apocalyptic number.

It is an amenable number.

4678321 is a deficient number, since it is larger than the sum of its proper divisors (1).

4678321 is an equidigital number, since it uses as much as digits as its factorization.

4678321 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 8064, while the sum is 31.

The square root of 4678321 is about 2162.9426714548. The cubic root of 4678321 is about 167.2489265826.

The spelling of 4678321 in words is "four million, six hundred seventy-eight thousand, three hundred twenty-one".