665940110 has 16 divisors (see below), whose sum is σ = 1307664432. Its totient is φ = 242160000.

The previous prime is 665940053. The next prime is 665940113. The reversal of 665940110 is 11049566.

665940110 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (665940113) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3026891 + ... + 3027110.

It is an arithmetic number, because the mean of its divisors is an integer number (81729027).

Almost surely, 2^665940110 is an apocalyptic number.

665940110 is a deficient number, since it is larger than the sum of its proper divisors (641724322).

665940110 is a wasteful number, since it uses less digits than its factorization.

665940110 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6054019.

The product of its (nonzero) digits is 6480, while the sum is 32.

The square root of 665940110 is about 25805.8154298600. The cubic root of 665940110 is about 873.2629965238.

Adding to 665940110 its reverse (11049566), we get a palindrome (676989676).

The spelling of 665940110 in words is "six hundred sixty-five million, nine hundred forty thousand, one hundred ten".