665200112 has 20 divisors (see below), whose sum is σ = 1344861840. Its totient is φ = 318139008.

The previous prime is 665200111. The next prime is 665200117. The reversal of 665200112 is 211002566.

665200112 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (23).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (665200111) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 903437 + ... + 904172.

It is an arithmetic number, because the mean of its divisors is an integer number (67243092).

Almost surely, 2^665200112 is an apocalyptic number.

It is an amenable number.

665200112 is an abundant number, since it is smaller than the sum of its proper divisors (679661728).

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

665200112 is a wasteful number, since it uses less digits than its factorization.

665200112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1807640 (or 1807634 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 23.

The square root of 665200112 is about 25791.4736298646. The cubic root of 665200112 is about 872.9394176873.

Adding to 665200112 its reverse (211002566), we get a palindrome (876202678).

The spelling of 665200112 in words is "six hundred sixty-five million, two hundred thousand, one hundred twelve".