660181066 has 8 divisors (see below), whose sum is σ = 990872064. Its totient is φ = 329890380.

The previous prime is 660181037. The next prime is 660181069.

660181066 is nontrivially palindromic in base 10.

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

It is not an unprimeable number, because it can be changed into a prime (660181069) 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 3 ways as a sum of consecutive naturals, for example, 95920 + ... + 102571.

It is an arithmetic number, because the mean of its divisors is an integer number (123859008).

Almost surely, 2^660181066 is an apocalyptic number.

660181066 is a deficient number, since it is larger than the sum of its proper divisors (330690998).

660181066 is a wasteful number, since it uses less digits than its factorization.

660181066 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 200156.

The product of its (nonzero) digits is 10368, while the sum is 34.

The square root of 660181066 is about 25693.9889079139. The cubic root of 660181066 is about 870.7383813833.

The spelling of 660181066 in words is "six hundred sixty million, one hundred eighty-one thousand, sixty-six".