665120150 has 24 divisors (see below), whose sum is σ = 1241130384. Its totient is φ = 265186400.

The previous prime is 665120123. The next prime is 665120153. The reversal of 665120150 is 51021566.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (665120153) 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 11 ways as a sum of consecutive naturals, for example, 5837 + ... + 36936.

It is an arithmetic number, because the mean of its divisors is an integer number (51713766).

Almost surely, 2^665120150 is an apocalyptic number.

665120150 is a deficient number, since it is larger than the sum of its proper divisors (576010234).

665120150 is a wasteful number, since it uses less digits than its factorization.

665120150 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43096 (or 43091 counting only the distinct ones).

The product of its (nonzero) digits is 1800, while the sum is 26.

The square root of 665120150 is about 25789.9234198165. The cubic root of 665120150 is about 872.9044383493.

The spelling of 665120150 in words is "six hundred sixty-five million, one hundred twenty thousand, one hundred fifty".