2066420064 has 72 divisors (see below), whose sum is σ = 5495477400. Its totient is φ = 679890432.

The previous prime is 2066420033. The next prime is 2066420077. The reversal of 2066420064 is 4600246602.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 597412 + ... + 600860.

It is an arithmetic number, because the mean of its divisors is an integer number (76326075).

Almost surely, 2^2066420064 is an apocalyptic number.

2066420064 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2066420064, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2747738700).

2066420064 is an abundant number, since it is smaller than the sum of its proper divisors (3429057336).

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

2066420064 is an equidigital number, since it uses as much as digits as its factorization.

2066420064 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3620 (or 3533 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 30.

The square root of 2066420064 is about 45457.8933079834. The cubic root of 2066420064 is about 1273.7167792194.

Adding to 2066420064 its reverse (4600246602), we get a palindrome (6666666666).

The spelling of 2066420064 in words is "two billion, sixty-six million, four hundred twenty thousand, sixty-four".