665010605 has 24 divisors (see below), whose sum is σ = 958256640. Its totient is φ = 441292320.

The previous prime is 665010601. The next prime is 665010613. The reversal of 665010605 is 506010566.

665010605 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 665010605 - 2² = 665010601 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (665010601) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 36185 + ... + 51374.

It is an arithmetic number, because the mean of its divisors is an integer number (39927360).

Almost surely, 2^665010605 is an apocalyptic number.

It is an amenable number.

665010605 is a deficient number, since it is larger than the sum of its proper divisors (293246035).

665010605 is a wasteful number, since it uses less digits than its factorization.

665010605 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 87609 (or 87602 counting only the distinct ones).

The product of its (nonzero) digits is 5400, while the sum is 29.

The square root of 665010605 is about 25787.7995377659. The cubic root of 665010605 is about 872.8565133907.

The spelling of 665010605 in words is "six hundred sixty-five million, ten thousand, six hundred five".