665243202 has 32 divisors (see below), whose sum is σ = 1471563072. Its totient is φ = 199157184.

The previous prime is 665243177. The next prime is 665243213. The reversal of 665243202 is 202342566.

665243202 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 665243202.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 112368 + ... + 118139.

It is an arithmetic number, because the mean of its divisors is an integer number (45986346).

Almost surely, 2^665243202 is an apocalyptic number.

665243202 is an abundant number, since it is smaller than the sum of its proper divisors (806319870).

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

665243202 is a wasteful number, since it uses less digits than its factorization.

665243202 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 230562.

The product of its (nonzero) digits is 17280, while the sum is 30.

The square root of 665243202 is about 25792.3089699236. The cubic root of 665243202 is about 872.9582662246.

Adding to 665243202 its reverse (202342566), we get a palindrome (867585768).

The spelling of 665243202 in words is "six hundred sixty-five million, two hundred forty-three thousand, two hundred two".