4020770205 has 64 divisors (see below), whose sum is σ = 7357651200. Its totient is φ = 2081790720.

The previous prime is 4020770189. The next prime is 4020770209. The reversal of 4020770205 is 5020770204.

It is not a de Polignac number, because 4020770205 - 2⁴ = 4020770189 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4020770209) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 4140370 + ... + 4141340.

It is an arithmetic number, because the mean of its divisors is an integer number (114963300).

Almost surely, 2^4020770205 is an apocalyptic number.

4020770205 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

It is an amenable number.

4020770205 is a deficient number, since it is larger than the sum of its proper divisors (3336880995).

4020770205 is a wasteful number, since it uses less digits than its factorization.

4020770205 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1851 (or 1845 counting only the distinct ones).

The product of its (nonzero) digits is 3920, while the sum is 27.

The square root of 4020770205 is about 63409.5434851884. The cubic root of 4020770205 is about 1590.1438638072.

Subtracting 4020770205 from its reverse (5020770204), we obtain a palindrome (999999999).

The spelling of 4020770205 in words is "four billion, twenty million, seven hundred seventy thousand, two hundred five".