665334018 has 24 divisors (see below), whose sum is σ = 1504234368. Its totient is φ = 212135352.

The previous prime is 665334017. The next prime is 665334023. The reversal of 665334018 is 810433566.

It is not an unprimeable number, because it can be changed into a prime (665334011) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 803130 + ... + 803957.

It is an arithmetic number, because the mean of its divisors is an integer number (62676432).

Almost surely, 2^665334018 is an apocalyptic number.

665334018 is an abundant number, since it is smaller than the sum of its proper divisors (838900350).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

665334018 is a wasteful number, since it uses less digits than its factorization.

665334018 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1607118 (or 1607115 counting only the distinct ones).

The product of its (nonzero) digits is 51840, while the sum is 36.

The square root of 665334018 is about 25794.0694346588. The cubic root of 665334018 is about 872.9979885249.

The spelling of 665334018 in words is "six hundred sixty-five million, three hundred thirty-four thousand, eighteen".