180099966 has 8 divisors (see below), whose sum is σ = 360199944. Its totient is φ = 60033320.

The previous prime is 180099943. The next prime is 180099971. The reversal of 180099966 is 669990081.

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

180099966 is an admirable number.

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 15008325 + ... + 15008336.

It is an arithmetic number, because the mean of its divisors is an integer number (45024993).

Almost surely, 2^180099966 is an apocalyptic number.

180099966 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

180099966 is a wasteful number, since it uses less digits than its factorization.

180099966 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30016666.

The product of its (nonzero) digits is 209952, while the sum is 48.

The square root of 180099966 is about 13420.1328607432. The cubic root of 180099966 is about 564.7261219934.

The spelling of 180099966 in words is "one hundred eighty million, ninety-nine thousand, nine hundred sixty-six".