66727432 has 16 divisors (see below), whose sum is σ = 125212140. Its totient is φ = 33337536.

The previous prime is 66727403. The next prime is 66727501. The reversal of 66727432 is 23472766.

It is a happy number.

66727432 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 2 ways, for example, as 66031876 + 695556 = 8126^2 + 834^2 .

It is a junction number, because it is equal to n+sod(n) for n = 66727391 and 66727400.

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, 11458 + ... + 16270.

Almost surely, 2^66727432 is an apocalyptic number.

It is an amenable number.

66727432 is a deficient number, since it is larger than the sum of its proper divisors (58484708).

66727432 is a wasteful number, since it uses less digits than its factorization.

66727432 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6552 (or 6548 counting only the distinct ones).

The product of its digits is 84672, while the sum is 37.

The square root of 66727432 is about 8168.6860632540. The cubic root of 66727432 is about 405.6032913043.

The spelling of 66727432 in words is "sixty-six million, seven hundred twenty-seven thousand, four hundred thirty-two".