20560339 has 2 divisors, whose sum is σ = 20560340. Its totient is φ = 20560338.

The previous prime is 20560301. The next prime is 20560369. The reversal of 20560339 is 93306502.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 20560339 - 2¹⁵ = 20527571 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (20560369) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10280169 + 10280170.

It is an arithmetic number, because the mean of its divisors is an integer number (10280170).

Almost surely, 2^20560339 is an apocalyptic number.

20560339 is a deficient number, since it is larger than the sum of its proper divisors (1).

20560339 is an equidigital number, since it uses as much as digits as its factorization.

20560339 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4860, while the sum is 28.

The square root of 20560339 is about 4534.3510009703. The cubic root of 20560339 is about 273.9534392619.

The spelling of 20560339 in words is "twenty million, five hundred sixty thousand, three hundred thirty-nine".