66538282 has 8 divisors (see below), whose sum is σ = 100109952. Its totient is φ = 33168300.

The previous prime is 66538279. The next prime is 66538313. The reversal of 66538282 is 28283566.

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 49594 + ... + 50917.

It is an arithmetic number, because the mean of its divisors is an integer number (12513744).

Almost surely, 2^66538282 is an apocalyptic number.

66538282 is a deficient number, since it is larger than the sum of its proper divisors (33571670).

66538282 is a wasteful number, since it uses less digits than its factorization.

66538282 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 100844.

The product of its digits is 138240, while the sum is 40.

The square root of 66538282 is about 8157.1000974611. The cubic root of 66538282 is about 405.2196786162.

The spelling of 66538282 in words is "sixty-six million, five hundred thirty-eight thousand, two hundred eighty-two".