665099845 has 8 divisors (see below), whose sum is σ = 840126240. Its totient is φ = 504075600.

The previous prime is 665099839. The next prime is 665099863. The reversal of 665099845 is 548990566.

665099845 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 665099845 - 2³ = 665099837 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 665099792 and 665099801.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3500431 + ... + 3500620.

It is an arithmetic number, because the mean of its divisors is an integer number (105015780).

Almost surely, 2^665099845 is an apocalyptic number.

It is an amenable number.

665099845 is a deficient number, since it is larger than the sum of its proper divisors (175026395).

665099845 is a wasteful number, since it uses less digits than its factorization.

665099845 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7001075.

The product of its (nonzero) digits is 2332800, while the sum is 52.

The square root of 665099845 is about 25789.5297553096. The cubic root of 665099845 is about 872.8955554905.

The spelling of 665099845 in words is "six hundred sixty-five million, ninety-nine thousand, eight hundred forty-five".