66514218 has 32 divisors (see below), whose sum is σ = 137410560. Its totient is φ = 21450240.

The previous prime is 66514213. The next prime is 66514237. The reversal of 66514218 is 81241566.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (66514213) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 30178 + ... + 32306.

It is an arithmetic number, because the mean of its divisors is an integer number (4294080).

Almost surely, 2^66514218 is an apocalyptic number.

66514218 is an abundant number, since it is smaller than the sum of its proper divisors (70896342).

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

66514218 is a wasteful number, since it uses less digits than its factorization.

66514218 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2302.

The product of its digits is 11520, while the sum is 33.

The square root of 66514218 is about 8155.6249300713. The cubic root of 66514218 is about 405.1708226203.

The spelling of 66514218 in words is "sixty-six million, five hundred fourteen thousand, two hundred eighteen".