20227693 has 2 divisors, whose sum is σ = 20227694. Its totient is φ = 20227692.

The previous prime is 20227651. The next prime is 20227709. The reversal of 20227693 is 39672202.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 12404484 + 7823209 = 3522^2 + 2797^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20227693 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20227633) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10113846 + 10113847.

It is an arithmetic number, because the mean of its divisors is an integer number (10113847).

Almost surely, 2^20227693 is an apocalyptic number.

It is an amenable number.

20227693 is a deficient number, since it is larger than the sum of its proper divisors (1).

20227693 is an equidigital number, since it uses as much as digits as its factorization.

20227693 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 9072, while the sum is 31.

The square root of 20227693 is about 4497.5207614863. The cubic root of 20227693 is about 272.4679669441.

Adding to 20227693 its reverse (39672202), we get a palindrome (59899895).

The spelling of 20227693 in words is "twenty million, two hundred twenty-seven thousand, six hundred ninety-three".