2017020405 has 16 divisors (see below), whose sum is σ = 3314456064. Its totient is φ = 1046669760.

The previous prime is 2017020389. The next prime is 2017020407. The reversal of 2017020405 is 5040207102.

It is not a de Polignac number, because 2017020405 - 2⁴ = 2017020389 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2017020407) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1816581 + ... + 1817690.

It is an arithmetic number, because the mean of its divisors is an integer number (207153504).

Almost surely, 2^2017020405 is an apocalyptic number.

It is an amenable number.

2017020405 is a deficient number, since it is larger than the sum of its proper divisors (1297435659).

2017020405 is a wasteful number, since it uses less digits than its factorization.

2017020405 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3634316.

The product of its (nonzero) digits is 560, while the sum is 21.

The square root of 2017020405 is about 44911.2503165966. The cubic root of 2017020405 is about 1263.4850199874.

Adding to 2017020405 its reverse (5040207102), we get a palindrome (7057227507).

The spelling of 2017020405 in words is "two billion, seventeen million, twenty thousand, four hundred five".