66465312 has 24 divisors (see below), whose sum is σ = 174471696. Its totient is φ = 22155072.

The previous prime is 66465299. The next prime is 66465353. The reversal of 66465312 is 21356466.

66465312 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (24).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 346078 + ... + 346269.

It is an arithmetic number, because the mean of its divisors is an integer number (7269654).

Almost surely, 2^66465312 is an apocalyptic number.

It is an amenable number.

66465312 is an abundant number, since it is smaller than the sum of its proper divisors (108006384).

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

66465312 is a wasteful number, since it uses less digits than its factorization.

66465312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 692360 (or 692352 counting only the distinct ones).

The product of its digits is 25920, while the sum is 33.

The square root of 66465312 is about 8152.6260799818. The cubic root of 66465312 is about 405.0714947704.

The spelling of 66465312 in words is "sixty-six million, four hundred sixty-five thousand, three hundred twelve".