66140484 has 24 divisors (see below), whose sum is σ = 159307008. Its totient is φ = 21335520.

The previous prime is 66140471. The next prime is 66140491. The reversal of 66140484 is 48404166.

66140484 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 7 ways as a sum of consecutive naturals, for example, 88527 + ... + 89270.

It is an arithmetic number, because the mean of its divisors is an integer number (6637792).

Almost surely, 2^66140484 is an apocalyptic number.

It is an amenable number.

66140484 is an abundant number, since it is smaller than the sum of its proper divisors (93166524).

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

66140484 is a wasteful number, since it uses less digits than its factorization.

66140484 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 177835 (or 177833 counting only the distinct ones).

The product of its (nonzero) digits is 18432, while the sum is 33.

The square root of 66140484 is about 8132.6800010821. The cubic root of 66140484 is about 404.4105309642.

The spelling of 66140484 in words is "sixty-six million, one hundred forty thousand, four hundred eighty-four".