20030663 has 2 divisors, whose sum is σ = 20030664. Its totient is φ = 20030662.

The previous prime is 20030657. The next prime is 20030669. The reversal of 20030663 is 36603002.

It is a happy number.

It is a balanced prime because it is at equal distance from previous prime (20030657) and next prime (20030669).

It is a cyclic number.

It is not a de Polignac number, because 20030663 - 2⁶ = 20030599 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20030669) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10015331 + 10015332.

It is an arithmetic number, because the mean of its divisors is an integer number (10015332).

Almost surely, 2^20030663 is an apocalyptic number.

20030663 is a deficient number, since it is larger than the sum of its proper divisors (1).

20030663 is an equidigital number, since it uses as much as digits as its factorization.

20030663 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 648, while the sum is 20.

The square root of 20030663 is about 4475.5628696288. The cubic root of 20030663 is about 271.5804111391.

Adding to 20030663 its reverse (36603002), we get a palindrome (56633665).

The spelling of 20030663 in words is "twenty million, thirty thousand, six hundred sixty-three".