4320689 has 2 divisors, whose sum is σ = 4320690. Its totient is φ = 4320688.

The previous prime is 4320643. The next prime is 4320697. The reversal of 4320689 is 9860234.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 3385600 + 935089 = 1840^2 + 967^2 .

It is a cyclic number.

It is not a de Polignac number, because 4320689 - 2¹² = 4316593 is a prime.

It is not a weakly prime, because it can be changed into another prime (4323689) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2160344 + 2160345.

It is an arithmetic number, because the mean of its divisors is an integer number (2160345).

Almost surely, 2^4320689 is an apocalyptic number.

It is an amenable number.

4320689 is a deficient number, since it is larger than the sum of its proper divisors (1).

4320689 is an equidigital number, since it uses as much as digits as its factorization.

4320689 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 10368, while the sum is 32.

The square root of 4320689 is about 2078.6267101142. The cubic root of 4320689 is about 162.8737150249.

The spelling of 4320689 in words is "four million, three hundred twenty thousand, six hundred eighty-nine".