665336455 has 24 divisors (see below), whose sum is σ = 944002080. Its totient is φ = 448741440.

The previous prime is 665336453. The next prime is 665336459. The reversal of 665336455 is 554633566.

665336455 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 665336455 - 2¹ = 665336453 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (665336453) 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, 7315 + ... + 37204.

It is an arithmetic number, because the mean of its divisors is an integer number (39333420).

Almost surely, 2^665336455 is an apocalyptic number.

665336455 is a deficient number, since it is larger than the sum of its proper divisors (278665625).

665336455 is a wasteful number, since it uses less digits than its factorization.

665336455 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44599 (or 44592 counting only the distinct ones).

The product of its digits is 972000, while the sum is 43.

The square root of 665336455 is about 25794.1166741565. The cubic root of 665336455 is about 872.9990544023. Note that the first 3 decimals are identical.

The spelling of 665336455 in words is "six hundred sixty-five million, three hundred thirty-six thousand, four hundred fifty-five".