66459016 has 32 divisors (see below), whose sum is σ = 136483200. Its totient is φ = 30150720.

The previous prime is 66459011. The next prime is 66459031. The reversal of 66459016 is 61095466.

66459016 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Smith number, since the sum of its digits (37) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (66459011) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 721 + ... + 11551.

It is an arithmetic number, because the mean of its divisors is an integer number (4265100).

Almost surely, 2^66459016 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 66459016, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (68241600).

66459016 is an abundant number, since it is smaller than the sum of its proper divisors (70024184).

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

66459016 is a wasteful number, since it uses less digits than its factorization.

66459016 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10909 (or 10905 counting only the distinct ones).

The product of its (nonzero) digits is 38880, while the sum is 37.

The square root of 66459016 is about 8152.2399375877. The cubic root of 66459016 is about 405.0587040852.

The spelling of 66459016 in words is "sixty-six million, four hundred fifty-nine thousand, sixteen".