66470312 has 8 divisors (see below), whose sum is σ = 124631850. Its totient is φ = 33235152.

The previous prime is 66470311. The next prime is 66470333. The reversal of 66470312 is 21307466.

66470312 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 41809156 + 24661156 = 6466^2 + 4966^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is not an unprimeable number, because it can be changed into a prime (66470311) by changing a digit.

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 as a sum of consecutive naturals, namely, 4154387 + ... + 4154402.

Almost surely, 2^66470312 is an apocalyptic number.

It is an amenable number.

66470312 is a deficient number, since it is larger than the sum of its proper divisors (58161538).

66470312 is a wasteful number, since it uses less digits than its factorization.

66470312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8308795 (or 8308791 counting only the distinct ones).

The product of its (nonzero) digits is 6048, while the sum is 29.

The square root of 66470312 is about 8152.9327238730. The cubic root of 66470312 is about 405.0816519819.

Adding to 66470312 its reverse (21307466), we get a palindrome (87777778).

The spelling of 66470312 in words is "sixty-six million, four hundred seventy thousand, three hundred twelve".