66466118 has 4 divisors (see below), whose sum is σ = 99699180. Its totient is φ = 33233058.

The previous prime is 66466117. The next prime is 66466121. The reversal of 66466118 is 81166466.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66466117) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16616528 + ... + 16616531.

It is an arithmetic number, because the mean of its divisors is an integer number (24924795).

Almost surely, 2^66466118 is an apocalyptic number.

66466118 is a deficient number, since it is larger than the sum of its proper divisors (33233062).

66466118 is a wasteful number, since it uses less digits than its factorization.

66466118 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33233061.

The product of its digits is 41472, while the sum is 38.

The square root of 66466118 is about 8152.6755117569. The cubic root of 66466118 is about 405.0731321474.

The spelling of 66466118 in words is "sixty-six million, four hundred sixty-six thousand, one hundred eighteen".