2020642771 has 8 divisors (see below), whose sum is σ = 2327490560. Its totient is φ = 1718341128.

The previous prime is 2020642721. The next prime is 2020642777. The reversal of 2020642771 is 1772460202.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 2020642771 - 2²⁵ = 1987088339 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2020642777) 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 7 ways as a sum of consecutive naturals, for example, 1135581 + ... + 1137358.

It is an arithmetic number, because the mean of its divisors is an integer number (290936320).

Almost surely, 2^2020642771 is an apocalyptic number.

2020642771 is a deficient number, since it is larger than the sum of its proper divisors (306847789).

2020642771 is a wasteful number, since it uses less digits than its factorization.

2020642771 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2273073.

The product of its (nonzero) digits is 9408, while the sum is 31.

The square root of 2020642771 is about 44951.5602732541. The cubic root of 2020642771 is about 1264.2409317058.

The spelling of 2020642771 in words is "two billion, twenty million, six hundred forty-two thousand, seven hundred seventy-one".