2020005 has 32 divisors (see below), whose sum is σ = 3870720. Its totient is φ = 993600.

The previous prime is 2020003. The next prime is 2020019. The reversal of 2020005 is 5000202.

It is not a de Polignac number, because 2020005 - 2¹ = 2020003 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is an Ulam number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2020001) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1180 + ... + 2330.

It is an arithmetic number, because the mean of its divisors is an integer number (120960).

2^2020005 is an apocalyptic number.

It is an amenable number.

2020005 is a deficient number, since it is larger than the sum of its proper divisors (1850715).

2020005 is a wasteful number, since it uses less digits than its factorization.

2020005 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1178 (or 1172 counting only the distinct ones).

The product of its (nonzero) digits is 20, while the sum is 9.

The square root of 2020005 is about 1421.2687993480. The cubic root of 2020005 is about 126.4107907855.

Adding to 2020005 its reverse (5000202), we get a palindrome (7020207).

The spelling of 2020005 in words is "two million, twenty thousand, five".