180666630 has 48 divisors (see below), whose sum is σ = 494460720. Its totient is φ = 45641664.

The previous prime is 180666617. The next prime is 180666641. The reversal of 180666630 is 36666081.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 51117 + ... + 54536.

It is an arithmetic number, because the mean of its divisors is an integer number (10301265).

Almost surely, 2^180666630 is an apocalyptic number.

180666630 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

180666630 is an abundant number, since it is smaller than the sum of its proper divisors (313794090).

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

180666630 is a wasteful number, since it uses less digits than its factorization.

180666630 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 105685 (or 105682 counting only the distinct ones).

The product of its (nonzero) digits is 31104, while the sum is 36.

The square root of 180666630 is about 13441.2287384748. The cubic root of 180666630 is about 565.3177840034.

The spelling of 180666630 in words is "one hundred eighty million, six hundred sixty-six thousand, six hundred thirty".