2020789 has 2 divisors, whose sum is σ = 2020790. Its totient is φ = 2020788.

The previous prime is 2020771. The next prime is 2020793. The reversal of 2020789 is 9870202.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1868689 + 152100 = 1367^2 + 390^2 .

It is a cyclic number.

It is not a de Polignac number, because 2020789 - 2⁷ = 2020661 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2020729) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1010394 + 1010395.

It is an arithmetic number, because the mean of its divisors is an integer number (1010395).

2^2020789 is an apocalyptic number.

It is an amenable number.

2020789 is a deficient number, since it is larger than the sum of its proper divisors (1).

2020789 is an equidigital number, since it uses as much as digits as its factorization.

2020789 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2016, while the sum is 28.

The square root of 2020789 is about 1421.5445824877. The cubic root of 2020789 is about 126.4271427650.

It can be divided in two parts, 2020 and 789, that added together give a square (2809 = 53²).

The spelling of 2020789 in words is "two million, twenty thousand, seven hundred eighty-nine".