665322230 has 16 divisors (see below), whose sum is σ = 1225431504. Its totient is φ = 259939680.

The previous prime is 665322179. The next prime is 665322233. The reversal of 665322230 is 32223566.

It is a junction number, because it is equal to n+sod(n) for n = 665322193 and 665322202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (665322233) 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, 773201 + ... + 774060.

It is an arithmetic number, because the mean of its divisors is an integer number (76589469).

Almost surely, 2^665322230 is an apocalyptic number.

665322230 is a deficient number, since it is larger than the sum of its proper divisors (560109274).

665322230 is a wasteful number, since it uses less digits than its factorization.

665322230 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1547311.

The product of its (nonzero) digits is 12960, while the sum is 29.

The square root of 665322230 is about 25793.8409315092. The cubic root of 665322230 is about 872.9928327381.

Adding to 665322230 its reverse (32223566), we get a palindrome (697545796).

The spelling of 665322230 in words is "six hundred sixty-five million, three hundred twenty-two thousand, two hundred thirty".