2106020064 has 24 divisors (see below), whose sum is σ = 5528302920. Its totient is φ = 702006656.

The previous prime is 2106020041. The next prime is 2106020069. The reversal of 2106020064 is 4600206012.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (24).

It is a self number, because there is not a number n which added to its sum of digits gives 2106020064.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2106020069) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10968759 + ... + 10968950.

It is an arithmetic number, because the mean of its divisors is an integer number (230345955).

Almost surely, 2^2106020064 is an apocalyptic number.

2106020064 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

2106020064 is an abundant number, since it is smaller than the sum of its proper divisors (3422282856).

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

2106020064 is a wasteful number, since it uses less digits than its factorization.

2106020064 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21937722 (or 21937714 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 21.

The square root of 2106020064 is about 45891.3942259330. The cubic root of 2106020064 is about 1281.8016750864.

Adding to 2106020064 its reverse (4600206012), we get a palindrome (6706226076).

The spelling of 2106020064 in words is "two billion, one hundred six million, twenty thousand, sixty-four".