66488418 has 16 divisors (see below), whose sum is σ = 147752160. Its totient is φ = 22162788.

The previous prime is 66488413. The next prime is 66488431. The reversal of 66488418 is 81488466.

66488418 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (66488413) 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, 615580 + ... + 615687.

It is an arithmetic number, because the mean of its divisors is an integer number (9234510).

Almost surely, 2^66488418 is an apocalyptic number.

66488418 is an abundant number, since it is smaller than the sum of its proper divisors (81263742).

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

66488418 is a wasteful number, since it uses less digits than its factorization.

66488418 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1231278 (or 1231272 counting only the distinct ones).

The product of its digits is 294912, while the sum is 45.

The square root of 66488418 is about 8154.0430462440. The cubic root of 66488418 is about 405.1184290148.

The spelling of 66488418 in words is "sixty-six million, four hundred eighty-eight thousand, four hundred eighteen".