66470528 has 16 divisors (see below), whose sum is σ = 132422010. Its totient is φ = 33235200.

The previous prime is 66470519. The next prime is 66470543. The reversal of 66470528 is 82507466.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 55234624 + 11235904 = 7432^2 + 3352^2 .

It is a tau number, because it is divible by the number of its divisors (16).

It is a junction number, because it is equal to n+sod(n) for n = 66470491 and 66470500.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 259523 + ... + 259778.

Almost surely, 2^66470528 is an apocalyptic number.

It is an amenable number.

66470528 is a deficient number, since it is larger than the sum of its proper divisors (65951482).

66470528 is an equidigital number, since it uses as much as digits as its factorization.

66470528 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 519315 (or 519303 counting only the distinct ones).

The product of its (nonzero) digits is 80640, while the sum is 38.

The square root of 66470528 is about 8152.9459706293. The cubic root of 66470528 is about 405.0820907620.

The spelling of 66470528 in words is "sixty-six million, four hundred seventy thousand, five hundred twenty-eight".