66530018 has 8 divisors (see below), whose sum is σ = 99832512. Its totient is φ = 33252516.

The previous prime is 66529997. The next prime is 66530029. The reversal of 66530018 is 81003566.

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, 3371 + ... + 12017.

It is an arithmetic number, because the mean of its divisors is an integer number (12479064).

Almost surely, 2^66530018 is an apocalyptic number.

66530018 is a deficient number, since it is larger than the sum of its proper divisors (33302494).

66530018 is a wasteful number, since it uses less digits than its factorization.

66530018 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12496.

The product of its (nonzero) digits is 4320, while the sum is 29.

The square root of 66530018 is about 8156.5935291640. The cubic root of 66530018 is about 405.2029019379.

The spelling of 66530018 in words is "sixty-six million, five hundred thirty thousand, eighteen".