20560369 has 2 divisors, whose sum is σ = 20560370. Its totient is φ = 20560368.

The previous prime is 20560339. The next prime is 20560373. The reversal of 20560369 is 96306502.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 16200625 + 4359744 = 4025^2 + 2088^2 .

It is a cyclic number.

It is not a de Polignac number, because 20560369 - 2¹³ = 20552177 is a prime.

It is a super-2 number, since 2×20560369² = 845457546832322, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 20560369.

It is not a weakly prime, because it can be changed into another prime (20560339) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10280184 + 10280185.

It is an arithmetic number, because the mean of its divisors is an integer number (10280185).

Almost surely, 2^20560369 is an apocalyptic number.

It is an amenable number.

20560369 is a deficient number, since it is larger than the sum of its proper divisors (1).

20560369 is an equidigital number, since it uses as much as digits as its factorization.

20560369 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 9720, while the sum is 31.

The square root of 20560369 is about 4534.3543090500. The cubic root of 20560369 is about 273.9535725055.

The spelling of 20560369 in words is "twenty million, five hundred sixty thousand, three hundred sixty-nine".