2020663 has 2 divisors, whose sum is σ = 2020664. Its totient is φ = 2020662.

The previous prime is 2020661. The next prime is 2020679. The reversal of 2020663 is 3660202.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2020663 - 2¹ = 2020661 is a prime.

Together with 2020661, it forms a pair of twin primes.

It is the 1422-nd Hogben number.

It is a self number, because there is not a number n which added to its sum of digits gives 2020663.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2020661) by changing a digit.

It is a nontrivial repunit in base 1421.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1010331 + 1010332.

It is an arithmetic number, because the mean of its divisors is an integer number (1010332).

2^2020663 is an apocalyptic number.

2020663 is a deficient number, since it is larger than the sum of its proper divisors (1).

2020663 is an equidigital number, since it uses as much as digits as its factorization.

2020663 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 432, while the sum is 19.

The square root of 2020663 is about 1421.5002638058. The cubic root of 2020663 is about 126.4245150536.

Adding to 2020663 its reverse (3660202), we get a palindrome (5680865).

The spelling of 2020663 in words is "two million, twenty thousand, six hundred sixty-three".