665180103 has 8 divisors (see below), whose sum is σ = 1013607808. Its totient is φ = 380102904.

The previous prime is 665180099. The next prime is 665180123. The reversal of 665180103 is 301081566.

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

It is not a de Polignac number, because 665180103 - 2² = 665180099 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (665180123) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15837601 + ... + 15837642.

It is an arithmetic number, because the mean of its divisors is an integer number (126700976).

Almost surely, 2^665180103 is an apocalyptic number.

665180103 is a deficient number, since it is larger than the sum of its proper divisors (348427705).

665180103 is a wasteful number, since it uses less digits than its factorization.

665180103 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31675253.

The product of its (nonzero) digits is 4320, while the sum is 30.

The square root of 665180103 is about 25791.0857274369. The cubic root of 665180103 is about 872.9306650230.

The spelling of 665180103 in words is "six hundred sixty-five million, one hundred eighty thousand, one hundred three".