2020006644 has 24 divisors (see below), whose sum is σ = 4715403168. Its totient is φ = 673042080.

The previous prime is 2020006633. The next prime is 2020006661. The reversal of 2020006644 is 4466000202.

It is a super-3 number, since 3×2020006644³ (a number of 29 digits) contains 333 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7047 + ... + 63950.

It is an arithmetic number, because the mean of its divisors is an integer number (196475132).

Almost surely, 2^2020006644 is an apocalyptic number.

It is an amenable number.

2020006644 is an abundant number, since it is smaller than the sum of its proper divisors (2695396524).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2020006644 is a wasteful number, since it uses less digits than its factorization.

2020006644 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 73375 (or 73373 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 24.

The square root of 2020006644 is about 44944.4840219576. The cubic root of 2020006644 is about 1264.1082507901.

Adding to 2020006644 its reverse (4466000202), we get a palindrome (6486006846).

The spelling of 2020006644 in words is "two billion, twenty million, six thousand, six hundred forty-four".