20560263 has 4 divisors (see below), whose sum is σ = 27413688. Its totient is φ = 13706840.

The previous prime is 20560247. The next prime is 20560273. The reversal of 20560263 is 36206502.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 20560263 - 2⁴ = 20560247 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20560213) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3426708 + ... + 3426713.

It is an arithmetic number, because the mean of its divisors is an integer number (6853422).

Almost surely, 2^20560263 is an apocalyptic number.

20560263 is a deficient number, since it is larger than the sum of its proper divisors (6853425).

20560263 is an equidigital number, since it uses as much as digits as its factorization.

20560263 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6853424.

The product of its (nonzero) digits is 2160, while the sum is 24.

The square root of 20560263 is about 4534.3426204909. The cubic root of 20560263 is about 273.9531017110.

Adding to 20560263 its reverse (36206502), we get a palindrome (56766765).

The spelling of 20560263 in words is "twenty million, five hundred sixty thousand, two hundred sixty-three".