665030361 has 16 divisors (see below), whose sum is σ = 940028544. Its totient is φ = 416757504.

The previous prime is 665030309. The next prime is 665030363. The reversal of 665030361 is 163030566.

It is not a de Polignac number, because 665030361 - 2⁶ = 665030297 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (665030363) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 35860 + ... + 51146.

It is an arithmetic number, because the mean of its divisors is an integer number (58751784).

Almost surely, 2^665030361 is an apocalyptic number.

It is an amenable number.

665030361 is a deficient number, since it is larger than the sum of its proper divisors (274998183).

665030361 is a wasteful number, since it uses less digits than its factorization.

665030361 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16160.

The product of its (nonzero) digits is 9720, while the sum is 30.

The square root of 665030361 is about 25788.1825842769. The cubic root of 665030361 is about 872.8651568532.

The spelling of 665030361 in words is "six hundred sixty-five million, thirty thousand, three hundred sixty-one".