66334020 has 96 divisors (see below), whose sum is σ = 195350400. Its totient is φ = 16794624.

The previous prime is 66334019. The next prime is 66334039. The reversal of 66334020 is 2043366.

66334020 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 116296 + ... + 116864.

It is an arithmetic number, because the mean of its divisors is an integer number (2034900).

Almost surely, 2^66334020 is an apocalyptic number.

66334020 is a gapful number since it is divisible by the number (60) 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 66334020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (97675200).

66334020 is an abundant number, since it is smaller than the sum of its proper divisors (129016380).

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

66334020 is a wasteful number, since it uses less digits than its factorization.

66334020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 677 (or 675 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 24.

The square root of 66334020 is about 8144.5699702317. The cubic root of 66334020 is about 404.8046001472.

Adding to 66334020 its reverse (2043366), we get a palindrome (68377386).

The spelling of 66334020 in words is "sixty-six million, three hundred thirty-four thousand, twenty".