20563327 has 2 divisors, whose sum is σ = 20563328. Its totient is φ = 20563326.

The previous prime is 20563313. The next prime is 20563337. The reversal of 20563327 is 72336502.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20563327 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 20563295 and 20563304.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20563307) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10281663 + 10281664.

It is an arithmetic number, because the mean of its divisors is an integer number (10281664).

Almost surely, 2^20563327 is an apocalyptic number.

20563327 is a deficient number, since it is larger than the sum of its proper divisors (1).

20563327 is an equidigital number, since it uses as much as digits as its factorization.

20563327 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 7560, while the sum is 28.

The square root of 20563327 is about 4534.6804738592. The cubic root of 20563327 is about 273.9667096856.

Adding to 20563327 its reverse (72336502), we get a palindrome (92899829).

The spelling of 20563327 in words is "twenty million, five hundred sixty-three thousand, three hundred twenty-seven".