665165466 has 64 divisors (see below), whose sum is σ = 1694131200. Its totient is φ = 189505008.

The previous prime is 665165461. The next prime is 665165483. The reversal of 665165466 is 664561566.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (665165461) 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 31 ways as a sum of consecutive naturals, for example, 140941 + ... + 145583.

It is an arithmetic number, because the mean of its divisors is an integer number (26470800).

Almost surely, 2^665165466 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 665165466, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (847065600).

665165466 is an abundant number, since it is smaller than the sum of its proper divisors (1028965734).

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

665165466 is a wasteful number, since it uses less digits than its factorization.

665165466 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5040 (or 5034 counting only the distinct ones).

The product of its digits is 777600, while the sum is 45.

The square root of 665165466 is about 25790.8019650417. The cubic root of 665165466 is about 872.9242621557.

The spelling of 665165466 in words is "six hundred sixty-five million, one hundred sixty-five thousand, four hundred sixty-six".