180665672 has 32 divisors (see below), whose sum is σ = 379537920. Its totient is φ = 79899840.

The previous prime is 180665671. The next prime is 180665687. The reversal of 180665672 is 276566081.

It is a super-3 number, since 3×180665672³ (a number of 26 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (180665671) 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 7 ways as a sum of consecutive naturals, for example, 24488 + ... + 30999.

It is an arithmetic number, because the mean of its divisors is an integer number (11860560).

Almost surely, 2^180665672 is an apocalyptic number.

It is an amenable number.

180665672 is an abundant number, since it is smaller than the sum of its proper divisors (198872248).

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

180665672 is a wasteful number, since it uses less digits than its factorization.

180665672 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55541 (or 55537 counting only the distinct ones).

The product of its (nonzero) digits is 120960, while the sum is 41.

The square root of 180665672 is about 13441.1931018046. The cubic root of 180665672 is about 565.3167847866.

The spelling of 180665672 in words is "one hundred eighty million, six hundred sixty-five thousand, six hundred seventy-two".